Hennig Gasket & Seals

What Hennig Gasket & Seals does

Hennig Gasket & Seals Inc. is a fourth-generation family-owned custom gasket and seal manufacturer and full-line distributor founded in 1920 and headquartered in a modernized plant at 2350 West Cullerton Street in Chicago, Illinois. The company fabricates custom gaskets and seals in virtually any size, shape, or configuration from non-metallic materials including rubber, PTFE, graphite, fiber, compressed non-asbestos, cork, and sponge rubber, using in-house waterjet cutting (+/- .007" tolerance), CNC flash cutting (60" x 120" capacity, no tooling charges), 72-ton die cutting (thousands of dies in inventory), and skilled hand cutting, supplemented by optical precision reverse engineering. Beyond manufacturing, Hennig operates as a full-line distributor for premier branded gasket materials including Garlock (including Gylon PTFE), Flexitallic, KLINGER Thermoseal, Topog-E, JM Clipper, Durlon, Frenzelit, Teadit, Rubberlite, Warco Biltrite, Slade, Inertex, Leader, Pyrotek, and Allpax cutting tools, plus Delavan spray nozzles (over 30,000 SKUs).

Name

Hennig Gasket & Seals

Legal name

Hennig Gasket & Seals Inc.

Website

https://henniggasket.com

Company type

Private

Founded year

1920

Operating status

Operating

Headcount range

11–50 employees

Short description

Hennig Gasket & Seals is a fourth-generation, family-owned custom gasket and seal manufacturer and full-line industrial distributor, fabricating non-metallic gaskets in any configuration with sub-24-hour turnaround and distributing branded materials from Garlock, Flexitallic, KLINGER, and others to chemical, oil & gas, power, food, and industrial MRO customers.

Ownership category

akta.pro rank

Product category

Custom Industrial Gasket Manufacturing

NAICS

Gasket, Packing, and Sealing Device Manufacturing (339991), Rubber Product Manufacturing (3262), Other Rubber Product Manufacturing (32629)

SIC

Gaskets, Packg & Sealg Devices & Rubber & Plastics Hose (3050), Fabricated Rubber Products, Nec (3060)

akta.pro primary industry

Seals, Gaskets & Fluid Connectors (O-rings, packings, rotary seals, quick couplers) (IMAHAGAI)

akta.pro secondary industry

Seals, Gaskets & O-Rings (Industrial Elastomer) (IMANALAC)

Keywords

• Custom gasket manufacturing
• Industrial sealing solutions
• Gasket material distribution
• Non-metallic gasket fabrication
• Precision cutting services

Headquarters

HQ city

Chicago

HQ country

United States

HQ region

North America

Offices1 record

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Supply Chain, Personnel, Operations, Infrastructure, Marketing or Sales, Technology or R&D

Revenue model

1. Custom Gasket & Seal Manufacturing: The company manufactures custom gaskets and custom seals in virtually any size, shape, or configuration from non-metallic materials. Manufacturing is done in-house using waterjet, flash, die, and hand cutting. Parts are manufactured to exact customer specifications from provided blueprints or reverse-engineered from sample parts. This is the primary revenue stream with same-day and 24-hour turnaround capabilities.
2. Gasket Material Distribution: Full-line distributor of gasket materials, seals, and gasket/seal tools from top brands including Garlock, Topog-E, Rubberlite, Leader, Inertex, Warco Biltrite, KLINGER, Flexitallic, Teadit, Frenzelit, Slade, Allpax, and Durlon. Also distributes mechanical seals, hydraulic packing, spray nozzles, and gasket cutting tools. Revenue from markup on distributed materials and products.
3. Stocked Gaskets & Industrial Supplies: Maintains inventory of pre-made industrial gaskets and seals (boiler gaskets, flange gaskets, spiral wound gaskets, non-asbestos products) and gasket supplies (gasket cutters, expansion joints, hydraulic packing, joint sealant, compression packing, spray nozzles, packing hooks, cutting boards, cutting blades) ready for same-day shipment.
4. Engineering & Fabrication Services: Provides reverse engineering services, full engineering support, and custom fabrication from concept to delivery. A dedicated single point person coordinates projects from inquiry through delivery.

Pricing tiers

Go-to-market motion1 record

Distribution channels2 records

Marketing channels5 records

Core offering

Hennig Gasket & Seals manufactures custom gaskets and seals in virtually any size, shape, or configuration from non-metallic materials (rubber, PTFE, graphite, fiber, compressed non-asbestos, cork, sponge rubber) using waterjet, flash, die, and hand cutting methods. The company also operates as a full-line distributor of branded gasket materials and sealing products from leading manufacturers including Garlock, Flexitallic, KLINGER, Topog-E, JM Clipper, Allpax, and Delavan, while maintaining an inventory of pre-made industrial gaskets and raw sheet/roll materials ready for same-day shipment.

Product overview

Hennig Gasket & Seals is a fourth-generation family-owned custom gasket and seal manufacturer serving diverse industrial sectors. The core product is custom gasket and seal fabrication, available in virtually any size, shape, or configuration, with manufacturing capabilities including waterjet cutting, flash cutting, die cutting, and hand cutting. The company maintains a large inventory of non-metallic gasket materials and can fulfill orders within 24 hours. The product portfolio consists of three integrated components: (1) Custom manufacturing services using waterjet, flash, die, and reverse engineering capabilities for bespoke parts; (2) An extensive finished goods catalog including Viton®, silicone, PTFE, Gylon®, EPDM, nitrile (Buna-N), neoprene, graphite, high temperature, spiral wound, food grade, compressed non-asbestos, cork, fiber, sponge rubber, flange, hydraulic packing, mechanical seals, and PTFE envelope gaskets; and (3) Raw material inventory of sheet and roll gasket materials in rubber (natural gum, SBR red, neoprene, nitrile, EPDM, Hypalon, Viton, silicone, polyurethane), compressed non-asbestos, fiber, graphite, ceramic fiber, cork, felt, PTFE, Gylon, open/closed cell sponge, and skirtboard rubber. The company also distributes branded products from Garlock, Flexitallic, KLINGER, Topog-E, JM Clipper, Allpax, and Delavan Spray Technologies. Ancillary offerings include gasket supplies (cutting boards, blades, cutters, packing hooks, expansion joints, joint sealant), and hydraulic packing products.

Differentiator

Problem solved

Functional benefit

Products and services

• Custom Gaskets & Seals Custom-manufactured gaskets and seals fabricated to customer specifications in any size, shape, or configuration from non-metallic materials, with turnaround under 24 hours. For industrial buyers in chemical, oil & gas, power, food processing, and MRO sectors.
• Waterjet Cutting Services CNC waterjet cutting for non-metallic gasket materials with +/- .007 inch tolerance, capable of cutting parts from 1/64 inch to 6 inches thick and producing gaskets up to 6' x 8', 5' x 13', or 80" x 80". For industrial customers needing precision gasket profiles.
• Flash Cutting Services Oscillating knife CNC flash cutting eliminating rule dies with no tooling charges, 60" x 120" capacity, cutting material from .005" to .250" thick. For customers needing gaskets up to 5' x 10' with smooth edges and minimal material loss.
• Die Cutting Services Steel rule die cutting using 72-ton presses producing parts up to 36" x 62", with an inventory of thousands of dies for rapid prototyping and production runs. For high-volume gasket production customers.
• Reverse Engineering Services Optical precision measuring equipment establishes all critical dimensions of parts up to 2' x 3' profile, with CAD drawings generated for any size part requiring reverse engineering. For customers needing to reproduce or replace obsolete gaskets.
• Stocked Industrial Gaskets & Seals Pre-manufactured industrial gaskets and seals including boiler gaskets, flange gaskets, spiral wound gaskets, and non-asbestos products available for same-day shipment. For industrial MRO and operations customers.
• Gasket Sheet & Roll Material Extensive inventory of non-metallic gasket sheet and roll materials including rubber, compressed non-asbestos, fiber, PTFE, graphite, ceramic fiber, cork, felt, and sponge materials in various thicknesses and sizes. For industrial customers and gasket fabricators.
• Viton (FKM) Gaskets & Seals Fluoroelastomer gaskets manufactured from Viton® (FKM) material with temperature range of -18°F to +400°F, resistant to oils, fuels, and chemicals. Available in Grades A, B, F, and Extreme. For chemical processing and oil & gas applications.
• Silicone Gaskets & Seals Silicone rubber gaskets available in commercial, specification, FDA, translucent, fluorosilicone, fiberglass reinforced, medical, and high/medium strength grades. Temperature range from -94°F to +500°F. For food, medical, and general industrial applications.
• Rubber Gaskets & Seals Custom rubber gaskets manufactured from Buna-N, Natural Gum, SBR, EPDM, Neoprene, FDA-approved, Polyurethane, and Viton materials. Includes cloth-inserted, diaphragm, and various elastomer options. For general industrial sealing.
• PTFE Gaskets, Seals & Washers PTFE gaskets, seals, and washers including virgin PTFE, glass-filled, carbon-filled, barium sulfate-filled, and expanded PTFE. Temperature range from -430°F to 500°F. For chemical processing and pharmaceutical applications.
• Gylon® Reinforced PTFE Gaskets Garlock's reinforced PTFE gasket material with reduced creep relaxation. Available in Styles 3500, 3504, 3510, 3540, and 3565 with different fillers for specific chemical resistance profiles. For aggressive chemical service.
• Spiral Wound Gaskets Multiple-ply metal and filler spiral gaskets from Garlock and Flexitallic brands. Filler options include ceramic, flexible graphite, PTFE, and mica graphite. Pressure ratings to 3,000 psi. For high-temperature and high-pressure flange applications.
• High Temperature Gaskets Gaskets designed for temperatures exceeding 750°F, including ceramic fiber (up to 2,300°F), woven stainless steel with graphite (up to 1,800°F), Frenzelit Novatec (up to 925°F), and spiral wound gaskets (up to 850°F). For power generation and high-heat industrial service.
• Food Grade (FDA) Gaskets FDA-compliant gaskets including white nitrile Buna-N, white neoprene, white EPDM, white Viton, FDA white silicone, and Gylon materials. For food processing, pharmaceutical, and medical applications requiring FDA compliance.
• Boiler Gaskets & Seals Manhole and handhole gaskets including Topog-E Series 180 molded rubber (rated to 380°F, 180 psi), Topog-E Series 2000 graphite foil (to 1,200°F), and custom EPDM formulations. For steam boiler and pressure vessel applications.
• Hydraulic Packing Garlock CHEVRON, GARTHANE, and SLUDGE-PAK hydraulic packing products with over 500 stock sizes. Includes flange packings, back-up rings, U-cups, vee-flex, piston cups, and urethane seals. For hydraulic cylinder and pump applications.
• Mechanical Seals Mechanical seal products with repair services for stuffing box applications in pumps and rotating equipment.
• Delavan Spray Nozzles Over 30,000 spray nozzle products from Delavan Spray Technologies including air atomizing, airless, flat spray, hollow cone, and solid cone nozzles for industrial applications.
• Gasket Cutting Tools & Supplies Allpax gasket cutter systems, cutting boards, cutting blades, packing hooks, expansion joints, and joint sealant for gasket fabrication and maintenance. For industrial maintenance personnel and gasket fabricators.

Quantifiable outcome

• Custom parts manufactured in under 24 hours
• +4 more outcomes

Named customers1 record

Segments10 records

Ideal customer profiles4 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature4 records

Partnerships

16 partnerships are on record, tiered core and minor.

• Garlock Sealing TechnologiescoreChannel Partner/ Reseller/ DistributorHennig Gasket & Seals is a full-line distributor for Garlock gasket materials including Blue-Gard series (3000, 3200, 3300, 3400, 3700, 3750, 3760), Garlock 9800/9850/9900, Garlock IFG5500, and Garlock FLEXSEAL spiral wound gaskets. Also distributes Gylon PTFE materials and Garlock hydraulic packing products (CHEVRON, GARTHANE, SLUDGE-PAK).
• FlexitalliccoreChannel Partner/ Reseller/ DistributorDistributor of Flexitallic spiral wound gaskets and non-asbestos compressed gasket materials including SF 1600, SF 2400/2800, SF 2420, SF 2440, SF 3300, SF 3500, SF 5000, and AF 2100. Also distributes Flexitallic's proprietary Thermiculite high-temperature sealing material.
• KLINGER (Thermoseal / Klingersil)coreChannel Partner/ Reseller/ DistributorFull-line distributor for KLINGER Thermoseal (Klingersil) compressed gasket materials including Klingersil C-4401, C-4430, and C-4408 wire-inserted variants. Products rated up to 750°F and 1500 psi for demanding industrial applications.
• JM ClippercoreChannel Partner/ Reseller/ DistributorJM Clipper seals distributor handling their full range of fiber gasket materials including first-generation compressed non-asbestos (SBR aramid fiber), third-generation nitrile-based materials (up to 700°F), PTFE-based materials (flexible to -350°F), and rubber/vegetable filled fiber sheet.
• Topog-E Gasket CompanycoreChannel Partner/ Reseller/ DistributorAuthorized distributor and strategic partner for Topog-E boiler gaskets including Series 180 molded rubber gaskets (rated to 380°F, 180 psi) and Series 2000 exfoliated graphite foil gaskets (rated to 1200°F) for steam pressure vessels.
• Allpax Gasket Cutter SystemsminorChannel Partner/ Reseller/ DistributorLong-standing distributor relationship for Allpax products including gasket cutters, cutting boards, cutting blades, center pins, heavy-duty cutter kits, and flexible packing hooks. Most popular items stocked for same-day shipping.
• Delavan Spray TechnologiesminorChannel Partner/ Reseller/ DistributorDistributor for Delavan Spray Technologies' entire product line of spray nozzles including air atomizing, airless, Dela-Fit, flat spray, hollow cone, and solid cone nozzles. Stocked items include over 30,000 different nozzles and component parts for industrial applications.
• PyrotekminorChannel Partner/ Reseller/ DistributorSupplies flexible graphite sheet material from Pyrotek in sizes up to 60" square and thicknesses from 1/32" to 1/4" for high-temperature and aggressive chemical sealing applications.
• Leader GasketminorChannel Partner/ Reseller/ DistributorDistributor for Leader spiral wound gaskets, heat exchanger gaskets, and metal gaskets. Products are available alongside the company's custom fabrication capabilities.
• Teadit Gasket MaterialsminorChannel Partner/ Reseller/ DistributorDistributor for Teadit gasket materials as part of the company's full-line distribution of branded non-metallic sealing materials.
• Frenzelit Gasket MaterialsminorChannel Partner/ Reseller/ DistributorDistributor for Frenzelit gasket materials including Novatec high-temperature materials rated to +925°F, as well as Novapress compressed gasket materials.
• Slade Gasket MaterialsminorChannel Partner/ Reseller/ DistributorDistributor for Slade gasket materials as part of the company's comprehensive branded material distribution offering.
• RubberliteminorChannel Partner/ Reseller/ DistributorDistributor for Rubberlite gasket materials including their closed cell sponge rubber products (e.g., SCE41B neoprene/EPDM/SBR blend) used in sealing and weatherstripping applications.
• DurlonminorChannel Partner/ Reseller/ DistributorDistributor for Durlon high-temperature CNA gasket materials (8300, 8900, HT1000) and related Durlon gasket products for demanding industrial sealing applications.
• Inertex (Innertex)minorChannel Partner/ Reseller/ DistributorDistributor for Inertex/Innertex gasket materials as part of the company's branded material distribution portfolio.
• Warco BiltriteminorChannel Partner/ Reseller/ DistributorDistributor for Warco Biltrite rubber gasket materials including their rubber sheet and gasket material product lines.

Scale indicators5 records

Recent moves4 records

Expansion highlights4 records

Broad incumbents

• John Crane: John Crane is a global leader in mechanical seals, couplings, and sealing-support systems serving oil & gas, power, chemical, and general industrial markets. While much larger and broader than Hennig (focused on rotating-equipment seals), it overlaps in mechanical seals, packing, and industrial gasket service.
• W.L. Gore & Associates: W.L. Gore & Associates manufactures expanded PTFE sealing products (GORE-TEX gaskets and packing) used across chemical processing, pharmaceutical, and industrial sealing. It is a much broader materials science company but competes directly with Hennig in high-performance PTFE gaskets and seals.
• James Walker: James Walker is a long-established global manufacturer of sealing products, gaskets, and compression packing serving oil & gas, chemical, power, and marine customers. It is broader in scope than Hennig (with international operations and a wider product portfolio) but competes head-to-head in industrial sealing solutions and packing.

Direct peers

• Garlock Sealing Technologies: Garlock Sealing Technologies (a subsidiary of EnPro Industries) is one of the largest manufacturers of gaskets, seals, and packing products globally and is also one of Hennig's primary brand-distribution partners. It competes directly with Hennig on custom gasket manufacturing and industrial sealing solutions across the same verticals (chemical, oil & gas, power).
• Gasket Resources Inc. Gasket Resources Inc. is a US custom gasket manufacturer and distributor specializing in cut gaskets, sheet materials, and sealing products for industrial customers. It is a direct peer in business model (custom manufacturer + distributor), target verticals (chemical, refining, MRO), and competitive positioning (speed, breadth, engineering support).
• All Seals Inc. All Seals is a US-based distributor and custom fabricator of O-rings, gaskets, seals, and hydraulic packing serving industrial MRO and OEM customers. It is a direct peer to Hennig in product mix (custom + distribution), customer segments (MRO/industrial), and service model (same-day quotes, in-house cutting).
• Frenzelit: Frenzelit manufactures high-performance gasket materials (Novatec, Novapress) used in chemical, power, and process-industry applications and is one of Hennig's branded gasket-material suppliers. It competes directly in the high-temperature compressed-sheet gasket segment served by Hennig.
• Teadit: Teadit is a global manufacturer of sealing products including gaskets, packing, and PTFE materials, and is one of Hennig's branded gasket-material suppliers. Teadit sells directly to industrial end-customers and competes with Hennig in custom and branded gasket fabrication across chemical processing, refining, and general manufacturing.
• Flexitallic: Flexitallic is a leading manufacturer of static-sealing products, including spiral wound gaskets and Thermiculite high-temperature sealing materials, and is another core brand Hennig distributes. Flexitallic serves the same refining, petrochemical, and power-generation customers and competes with Hennig for custom and branded gasket work.
• Klinger (Rich. Klinger): KLINGER manufactures compressed fiber gaskets (Thermoseal/Klingersil) and other sealing products for industrial applications. As one of Hennig's principal brand-distribution partners, KLINGER competes in the same compressed non-asbestos gasket space and serves overlapping chemical, power, and process-industry customers.

Market position

Strengths3 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• YouTubeyoutube.com/channel/UCd8Ykud-GhC482cwUvCrngg

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 record

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Hennig Gasket & Seals