What OK Sealer does

OK Sealer is a division of OK International Corp., a family-owned industrial equipment manufacturer founded in 1982 by Owen Kellett, Sr. in Marlborough, Massachusetts. The company designs, engineers, and manufactures integrated bag sealing and packaging automation systems in-house, including continuous hot air sealers (Supersealer SS1, SS2), continuous band sealers (SB20), FDA-compliant medical band sealers (MBS20, MBS30), the T-PAK family of bagging systems, air evacuation and gas flush systems, and bag fill/seal lines. All engineering and manufacturing are performed internally to maintain quality control and enable continuous technology improvements.

The company serves three primary vertical segments: medical device manufacturers requiring FDA- and ISO-compliant (ISO 11607-2, ISO 13485, ISO 9001, EN 868) packaging of terminally sterilized devices; food processors in poultry, meat, seafood, bakery, produce, coffee, and snacks requiring washdown-rated (IP65/IP69K) equipment and gas-flush shelf-life extension; and industrial/consumer goods packagers in textiles, fertilizers, and agricultural products. OK Sealer claims to be the only manufacturer of bag-in-box systems meeting IP69K requirements.

Revenue is generated through direct, quote-based sales of configured industrial equipment, supported by three regional offices in the Americas (Marlborough, MA), UK (Stanton, Suffolk), and Netherlands (Lisse), serving customers across more than 60 countries. The go-to-market motion combines direct enterprise sales, regional office support, trade show presence (Pack Expo, California Almond Conference), and a multilingual website available in English, Spanish, Dutch, and German. Ann Marie Kellett serves as President of OK International Group, continuing family ownership.

Name

OK Sealer

Legal name

OK International Corp.

Website

https://oksealer.com

Company type

Private

Founded year

1982

Operating status

Operating

Headcount range

11–50 employees

Short description

OK Sealer, a division of family-owned OK International Corp., manufactures integrated bag sealing and packaging automation systems — including hot air, band, and FDA-compliant medical sealers — serving medical device, food processing, and industrial goods manufacturers across 60+ countries.

Ownership category

akta.pro rank

Product category

Industrial Packaging Machinery

akta.pro primary industry

Capping, Closing & Sealing Equipment (Capper, Induction, Heat Seal) (IMALAOAC)

akta.pro secondary industry

Packaging & Bagging Equipment (Weighers, Baggers, Sealers) (AFAAAJAI)

Keywords

• Industrial bag sealing equipment
• Packaging automation machinery
• Medical band sealers
• Continuous hot air sealers
• Food packaging machinery

Headquarters

HQ city

Marlborough

HQ country

United States

HQ region

North America

Offices3 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. Industrial Bag Sealing Equipment Sales: OK Sealer generates revenue through the sale of industrial bag sealing machinery including hot air sealers, band sealers, medical band sealers, bagging systems, and related equipment. All products are configured to customer specifications with custom pricing based on application requirements.

Go-to-market motion1 record

Distribution channels2 records

Marketing channels4 records

Core offering

OK Sealer is a manufacturer of industrial bag sealing and bagging automation systems. It designs, engineers, and produces continuous hot air sealers (Supersealer SS1/SS2), continuous band sealers (SB20), FDA-compliant medical band sealers (MBS20, MBS30), a T-PAK family of semi-automatic bagging systems, air evacuation and gas flush systems, and integrated bag fill-and-seal lines, with accessories such as conveyors, trimmers, coders, dedusters, and compression belts. All engineering and manufacturing is performed in-house, with stainless steel and IP65/IP69K washdown configurations available.

Product overview

OK Sealer is a division of OK International Corp., offering a comprehensive portfolio of bag sealing and bagging equipment. The core product line centers on Supersealer systems (available as hot air sealers like SS1/SS2 and band sealers like SB20), complemented by specialized medical-grade band sealers (MBS20 and MBS30) for FDA-regulated packaging. The T-PAK bagging system family (T-PAK 500, 550, 550WD, 550-2, 550-3, and 750) provides semi-automatic bag compression and sealing solutions for various industries. Air evacuation and gas flush systems enable vacuum packaging for extended shelf life. Add-on options include conveyors (BBY100, BBY200, M500), dedusters, trimmers, coders, and compression belts. All equipment emphasizes in-house engineering and manufacturing, with options for stainless steel construction and IP65/IP69K washdown ratings.

Differentiator

Problem solved

Functional benefit

Products and services

• Hot Air Sealers (Supersealer SS1, SS2) Continuous hot air sealers using heat-based sealing technology, available in various configurations including standard, washdown, and heavy-duty versions, for industrial packaging operations.
• Band Sealers (SB20) Continuous band sealers that use heated bands to seal bags, offering reliable and consistent sealing across various industrial packaging applications.
• Supersealer MBS20 Medical Band Sealer FDA-compliant continuous rotary band sealer designed for medical packaging, sealing materials including Poly/Poly, Tyvek, Mylar, PET Coated Tyvek, Paper/Poly, Laminated Foil, and Metalized Foil pouches, with HMI control and up to 65 recipe storage.
• Supersealer MBS30 Medical Band Sealer Advanced FDA-compliant medical band sealer featuring broken band sensor, wrinkle detector, full validatability/calibratability, Ethernet port for data extraction, and HMI monitoring of temperature, pressure, and speed; can generate reports displaying recipe parameters and out-of-tolerance sampling points; runs up to 70 ft/min (121.3 mpm).
• T-PAK 500 Bagging System Semi-automatic bagging system combining a Supersealer with optional T-PAK infeed device, SST top trimmer, trim remover, and flat conveyor, available in painted steel, stainless steel, or washdown configurations.
• T-PAK 550 Bagging System Semi-automatic bag compression and sealing system with foam or FDA-approved blue cleat compression belt, combining a Supersealer hot air or band sealer for produce, poultry, meat, tortilla, bakery, and textile industries.
• T-PAK 550WD Washdown Bagging System Washdown-rated (IP65 or IP69K) bagging system with blue FDA-approved cleat compression belt, designed for cleanroom packaging environments requiring frequent cleaning in food and related industries.
• T-PAK 550-2 Heavy Duty Bagging System Heavy-duty bag compression and sealing system with a robust compression belt on an 18-inch wide, 16-foot long conveyor belt for scallion/asparagus, produce, bell pepper, tortilla, and bakery industries.
• T-PAK 550-3 High Speed Bagging System High-speed bag compression and sealing system with a heavy-duty conveyor and full-width compression belt for increased bag handling throughput, serving poultry, meat, and textile industries.
• T-PAK 750 Angled Bagging System High-speed semi-automatic angled bagging system with powered back belt, automatic bag presentation, and full compression belt for removing excess air, custom-built for customer application requirements.
• Small Bag Air Evacuation / Gas Flush System Continuous bag sealer with probe for air extraction in smaller bag applications, extending product shelf life and reducing package volume.
• Bag-in-Box Air Evacuation / Gas Flush System Continuous bag sealer with vacuum probe for bag-in-box applications, with programmable probe operation via timer or foot pedal activation. OK Sealer is the only manufacturer of bag-in-box systems meeting IP69K requirements.
• Horizontal Air Evacuation / Gas Flush System Horizontal presentation sealer with air evacuation or air and gas flush for clean-room packaging, featuring touch screen flow control, PLC recipes (up to 65), and available in IP65/IP69K washdown versions.
• Twin Supersealer System Dual sealing configuration pairing two hot air or band sealers for applications requiring double sealing, available in stainless steel construction.
• Heavy Weight Bag Sealer with M-500 Conveyor Heavy-duty sealing system with Supersealer SS2 or SB20, motorized pedestal, stainless steel base with locking casters, and M500 support conveyor; handles products up to 60 lbs (27 kg), speeds up to 120 fpm, and seals materials up to 20+ mils thick.
• Supersealer MBS Air Evacuation System Horizontal medical bag sealer with air evacuation and gas flush capability, compliant with ISO 11607-2, ISO 13485, ISO 9001, and EN 868 standards; available in IP65 or IP69K washdown versions with IQ/OQ documentation support.
• Supersealer MBS Bagging System Semi-automatic T-PAK 500 system integrating a Supersealer medical band sealer, T-PAK infeed device, and SST top trimmer for horizontal product placement in sanitized medical device packaging environments.
• Bag Fill and Seal Line (Supersealer with Scale) Semi-automatic bag filling and sealing line integrating a Supersealer with weighing scales (such as Tridyne) for weight-based filling of products like food, coffee, electronics, candy, cereals, and seeds; can run up to 48 ft/min and carries CE Marking.

Quantifiable outcome

• MBS20 can replace up to 5 bar sealers
• +4 more outcomes

Named customers4 records

Segments3 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature6 records

Scale indicators4 records

Recent moves9 records

Expansion highlights5 records

Direct peers

• American Packaging Machinery: American Packaging Machinery manufactures bag sealers, bagging equipment, and fill/seal systems for industrial and food packaging. Direct competitor in the continuous band sealer and bagging system categories.
• PAC Machinery: PAC Machinery manufactures bag sealing and bagging equipment including band sealers, hot air sealers, and vacuum sealers for industrial and food packaging applications. Highly comparable product line to OK Sealer's Supersealer portfolio with overlapping customer base in food and medical packaging.
• Matrix Packaging Machinery: Matrix Packaging Machinery (part of ProMach) produces vertical and horizontal bagging equipment for food, medical, and consumer goods. Comparable product line for bagging and sealing applications with overlapping end markets.
• SencorpWhite: SencorpWhite designs and manufactures heat sealers, vacuum sealers, and automated bagging systems for medical device and food packaging. Directly competes with OK Sealer in medical packaging heat sealing and custom automated bagging solutions.
• Ilapak: Ilapak manufactures horizontal form-fill-seal (HFFS) and bagging machinery for food, medical, and consumer goods packaging. Comparable to OK Sealer in the bagging/sealing equipment category, though Ilapak focuses more on integrated form-fill-seal lines.
• Heat Seal Equipment Co. Heat Seal Equipment Co. specializes in heat sealing machinery for industrial and medical packaging applications. Directly comparable niche product focus to OK Sealer's band and hot air sealer product lines.

Broad incumbents

• ProMach: ProMach is a major packaging machinery conglomerate offering integrated solutions across filling, sealing, labeling, and palletizing. While broader than OK Sealer's bag sealing focus, ProMach competes for the same enterprise customers with full-line integration capabilities.
• Multivac: Multivac is a leading global manufacturer of packaging and processing solutions including tray sealers, chamber machines, and form-fill-seal systems. Major competitor in medical device packaging and food packaging markets.
• Krones AG: Krones is a global packaging machinery leader specializing in beverage, food, and consumer goods packaging lines. While focused on higher-volume beverage applications, Krones competes for enterprise packaging line budgets that OK Sealer targets.
• Syntegon (formerly Bosch Packaging Technology): Syntegon is a global packaging machinery manufacturer serving food, pharma, and medical device industries with integrated processing and packaging lines. Competes with OK Sealer in medical packaging and food processing applications through broader portfolio offerings.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/company/ok-sealer
• Facebookfacebook.com/OKSealer
• YouTubeyoutube.com/@oksealer

Compliance8 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 record

Subsidiaries2 records

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 OK Sealer