Ningbo Sunshine Sealing Technology Co.

What Ningbo Sunshine Sealing Technology Co. does

Ningbo Sunshine Sealing Technology Co., Ltd is a privately held Chinese industrial sealing materials manufacturer established in 2006 and headquartered in Ningbo, Zhejiang Province. The company operates from a 25,000 square meter site with a 20,000 square meter building footprint and holds an import/export license, marketing its products under the Sunshine Seals and Sunshine Gaskets brands through a multilingual website (English, French, Spanish, Arabic). Its product portfolio is unusually broad for its size and includes finished sealing products (spiral wound gaskets, ring type joint gaskets, flexible graphite, non-asbestos fiber, PTFE, metal jacketed, kammprofile, copper, sanitary tri-clamp, rubber, and FFKM O-rings), compression gland packing, gasket sheet materials, refractory insulation (E-glass cloth, fire sleeves, glass fiber rope), plus a vertical line of CNC spiral wound gasket winding machines, kammprofile grooving machines, ring bending equipment, double-jacketed gasket machines, hand tools, and raw materials (V-shape metallic strip tapes, graphite, mica, and vermiculite tapes) for downstream gasket fabricators.

The underlying technology centers on materials compounding and forming: expanded graphite tapes with 98.5-99.8% carbon content, expanded PTFE joint sealants with 60% compressibility, vermiculite strips rated to 1000°C, OFHC copper and Monel/Inconel/Hastelloy metallic strips, and elastomer ranges covering NBR, EPDM, silicone, FKM/Viton, HNBR, FFKM, and Hypalon in sheet and O-ring form. The firm also produces the capital equipment used to convert these raw materials, including automatic spiral wound gasket winding machines and kammprofile grooving machines, which is a distinct business model choice versus pure finished-goods gasket shops.

Commercially, the company runs a direct B2B export model targeting oil and gas, chemical and petrochemical, mining, power generation, food and pharmaceutical, automotive, cement, and pipeline end markets, with primary emphasis on oil and gas and chemical/petrochemical. Pricing is positioned as competitive and application-specific, free samples are offered, and ISO 9001 quality management is the only disclosed certification. No customer logos, distribution agreements, management bios, funding history, or revenue figures are publicly disclosed.

Name

Ningbo Sunshine Sealing Technology Co.

Legal name

Ningbo Sunshine Sealing Technology Co., Ltd

Website

https://sunshinegaskets.com

Company type

Private

Founded year

2006

Operating status

Operating

Headcount range

11–50 employees

Short description

Ningbo Sunshine Sealing Technology Co. is a privately held Chinese manufacturer of industrial gaskets, compression packing, sealing raw materials, refractory insulation, and CNC gasket-fabrication equipment, exporting globally to oil and gas, chemical, petrochemical, power, food, pharmaceutical, and automotive customers.

Ownership category

akta.pro rank

Headquarters

HQ city

Ningbo

HQ country

China

HQ region

Asia

Offices1 record

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. Industrial Sealing Products Sales: Direct B2B sales of industrial sealing materials and products including gaskets, gland packings, rubber products, and sealing equipment. Products are sold to manufacturers and industrial customers in oil & gas, chemical, petrochemical, mining, power, food, pharmaceutical, automotive, and other sectors.
2. Sealing Machine Equipment Sales: Manufacturing and sales of gasket production equipment including spiral wound gasket winding machines, ring bending machines, kammprofile grooving machines, and other sealing-related machinery.
3. Custom Manufacturing Services: Custom manufacturing of specialized sealing products and raw materials including stainless steel strip tapes, graphite tapes, mica tapes, and other gasket production materials.

Go-to-market motion1 record

Distribution channels2 records

Marketing channels4 records

Core offering

Ningbo Sunshine Sealing Technology Co., Ltd manufactures and globally distributes industrial sealing materials and gaskets, including spiral wound gaskets, ring type joint gaskets, flexible graphite gaskets, non-asbestos fiber gaskets, PTFE gaskets, metal jacketed gaskets, kammprofile gaskets, copper metal gaskets, sanitary tri-clamp gaskets, compression gland packings, rubber gaskets and O-rings, high-performance PTFE plastics, expanded PTFE products, refractory insulation materials, and the spiral wound gasket winding machines, ring bending machines, and grooving machines used to produce them. The company also supplies raw materials such as metal strip tapes, graphite tapes, mica tapes, and vermiculite strips to other gasket manufacturers.

Product overview

Ningbo Sunshine Sealing Technology Co. is a manufacturer of industrial sealing materials established in 2006 in Ningbo, China. The product portfolio consists of physical sealing components and manufacturing equipment rather than a software platform. Core products include flange insulation gasket kits, spiral wound gaskets, ring type joint gaskets, flexible graphite gaskets, non-asbestos fiber gaskets, PTFE gaskets, metal jacketed gaskets, kammprofile gaskets, copper metal gaskets, sanitary tri-clamp gaskets, compression gland packing materials, rubber gaskets and O-rings (including FKM/Viton, FFKM, silicone, EPDM, NBR, HNBR variants), rubber gasket sheeting, high performance plastics (PTFE tubes, rods, wear strips), expanded PTFE products, and refractory insulation materials (glass fiber cloth, fire sleeves, ropes). Supporting product lines include sealing machine equipment (CNC and automatic spiral wound gasket winding machines, metal ring processing equipment, kammprofile grooving machines, double jacketed gasket machines) and sealing hand tools (punching tools, cutters, packing extractors, injection guns). The company also supplies raw materials for gasket manufacturing including V-shape metallic strip tapes, flexible graphite tapes, mica tapes, and vermiculite strips. These products serve oil and gas, chemical plants, petrochemical, mining, electronics, power generation, food processing, cement, pharmaceutical, automotive, and pipeline/boiler industries.

Differentiator

Problem solved

Functional benefit

Products and services

• Flange Insulation Gasket Kits Insulation gasket kits designed to prevent galvanic corrosion between flanges in pipeline systems, including VCS (Very Critical Service) high-pressure kits and Type E, Type D, and Type F variants with phenolic and neoprene/nitrile facing options. For pipeline operators, oil & gas, and chemical processing facilities.
• Spiral Wound Gaskets Spiral wound gaskets constructed from V-shaped or W-shaped metallic strip tape joined with non-metallic fillers (graphite, PTFE, mica) by spiral winding. Available in SS 304, SS 316L, Monel 400 materials with inner/outer centering rings for heat exchangers and high-temperature applications in oil & gas, chemical, and petrochemical service.
• Ring Type Joint Gaskets Metal sealing rings in octagonal, oval, BX, RX, and lens ring configurations for high-pressure flanged connections in oil, gas, and petrochemical applications.
• Flexible Graphite Gaskets Expanded graphite gaskets with tanged SS 316, wire mesh, flat foil reinforcement, and inner eyelet options for high-temperature sealing applications up to 450°C. Suitable for oil refining, petrochemical, and chemical plant service.
• Non-asbestos Fiber Gaskets Compressed non-asbestos fiber gaskets with aramid fiber and NBR binder, and carbon fiber variants for applications requiring asbestos-free sealing materials in general industrial service.
• PTFE Gaskets PTFE-based gaskets including virgin PTFE, expanded PTFE, stainless steel lined, envelope gaskets, and filled variants (silica, glass microspheres, glass fiber) for chemical-resistant sealing applications.
• Metal Jacketed Gaskets Double metal jacketed gaskets with outer metal casing providing structural support and inner sealing capability for demanding industrial applications including heat exchangers and high-temperature service.
• Kammprofile Gaskets Serrated metal-core gaskets with integral or loose outer rings, designed for reuse and available with grooved configurations for heat exchangers and high-pressure applications.
• Copper Metal Gaskets OFHC (oxygen-free high conductivity) copper gaskets including silver-plated variants for ultra-high vacuum applications, cylinder head gaskets, and exhaust manifold gaskets.
• Sanitary Tri-clamp Gaskets Food-grade sanitary gaskets in silicone, EPDM, and PTFE with SS316 mesh screen options for tri-clamp fittings in food, pharmaceutical, and dairy applications.
• Compression Gasket Sheet Materials Sheet-based gasket materials including flexible graphite sheets, non-asbestos sheets, rubberized cork sheets, and PTFE sheets in various filler compositions (glass fiber, bronze powder, barium sulfate, silica).
• Compression Gland Packing Braided gland packing materials including carbon fiber, flexible graphite, PTFE, aramid, synthetic fiber, cotton/flax/ramie, glass/ceramic fibers, and injectable sealant packings for pumps and valves.
• Rubber Gaskets and O-rings Rubber sealing products including rubber-steel gaskets, nitrile (NBR), EPDM, silicone, fluorosilicone (FVMQ), fluoroelastomer (FKM/Viton), HNBR, neoprene, and SBR rubber gaskets, plus FFKM O-rings.
• Rubber Gasket Sheeting Continuous rubber sheet materials in FKM/Viton, silicone, SBR, EPDM, NBR, HNBR, neoprene, and Hypalon elastomers with various Shore A hardness and fabric reinforcement options.
• High Performance Plastics PTFE-based engineering plastics including bearing wear strip tapes (bronze-filled), PTFE tubes and rods (virgin and compound-filled with glass fiber, carbon, graphite, bronze, polyimide, stainless steel), and phenolic resin wear strips.
• Expanded PTFE Products Expanded PTFE (ePTFE) sheet materials, gaskets, and joint sealant tapes with one-side adhesive backing, offering superior compressibility and chemical resistance for flange sealing applications up to 280°C.
• Sealing Machine Equipment Manufacturing equipment for gasket production including CNC spiral wound gasket winding machines (WSG04, WSG05), horizontal winding machines (WSG01/02/03), metal ring bending machines (SWR08/09), outer/inner ring grooving machines, spot welding machines, kammprofile grooving machines (CNC600, CAM601), and double jacketed gasket machines (DJG01). Sold to gasket manufacturers globally.
• Sealing Hand Tools Manual tools for gasket fabrication and maintenance including gasket punching tool sets, hand gasket cutters, gasket and washer cutters, gasket shears, braided packing ring cutters, packing extractor sets, injectable sealant injection guns, and flexible compression packing extractors.
• Sealing Raw Materials Raw materials for gasket manufacturing including V-shape stainless steel strip tapes (SS 304, SS 316L, SS 321, Monel 400, Inconel, Hastelloy, Titanium, Alloy 20, INCOLOY 825), flat strip tapes, flexible graphite tape filler, corrugated and crinkled graphite tapes, mica tape filler, and vermiculite strip (Thermiculite 835 equivalent).
• Refractory Insulation Materials High-temperature insulation materials including E-glass fiber cloth fabric, silicone coated fiberglass fire sleeves, and glass fiber ropes (square, round, twisted, graphite-treated, lagged, knitted) for thermal insulation and fire protection in industrial equipment.
• Perfluoroelastomer FFKM O-rings High-performance perfluoroelastomer O-rings offering superior chemical resistance and temperature capability (-55°C to 330°C) compared to FKM compounds. Available in ultra-high purity low-outgassing grades, extreme high-temperature variants, and cord stock for custom configurations.

Quantifiable outcome

• Temperature range capability from -240°C to 1000°C across product portfolio
• +2 more outcomes

Segments6 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

Scale indicators6 records

Recent moves6 records

Expansion highlights5 records

Market position

Weaknesses5 records

Competitive moat4 records

Customer concentration

• LinkedInlinkedin.com/company/ningbo-sunshine-sealing-technology-co-ltd

Compliance1 record

Revenue estimate

Valuation estimate

Number of profiles

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 Ningbo Sunshine Sealing Technology Co.