Formerly Gaynor Industries
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About Gaynor

Specialty Sealing Fasteners Since 1954

Gaynor Gasket & Seal (formerly Gaynor Industries) is a division of United Tool & Machine. Over 60 years ago, BarTite Sealing Washers were introduced as one of the first "one-piece washer" designs developed and patented in the United States.

Today, Gaynor & Gasket Seal operates out of a 60,000 square-foot-facility in Lawrence, MA and has invested heavily in streamlining processes and expanding production capabilities. We are committed to delivering top-quality products, which include stock and custom sealing washers, nuts, screws, and gaskets.

Specialty Sealing Fasteners Since 1954

Quality Policy

Mission Statement

Gaynor Gasket & Seal recognizes the importance of the customer to its business. We are dedicated to achieving superior customer satisfaction and intend to better meet our customer's requirements by:

  • Consistently manufacturing high quality products with exceptional service and support
  • Quickly responding to customer requests
  • Designed to seal fastener assemblies using standard nuts, bolts and screws
  • One piece washer/sealant design
  • Dampens noise and vibration
  • High-pressure sealing capability: Can withstand up to 8,500 psi internal hydrostatic pressure
  • 100% proudly made in USA

Gaynor Gasket & Seal pledges to strive for excellence, operate with these principles as our guide and utilize all available resources to achieve our purposes.


Specialty Sealing Fasteners Since 1954

Specialty Sealing Fasteners Since 1954

RoHS Compliance

RoHS is the acronym for Restriction of Hazardous Substances as defined by European Union Directive 2002/95/EC. Effective July 1, 2006, this directive restricts the use of lead (Pb), mercury (Hg), cadmium (Cd), hexavalent chromium (CrVI), polybrominated biphenyls (PBB), and polybrominated diphenyl ethers (PBDE) in new electrical and electronic equipment. Substances are restricted to 0.1% or 1000ppm by weight of homogeneous material (except for cadmium, which is limited to 0.01% or 100ppm). The restricted materials are found to be hazardous to the environment, pollute landfills, and are dangerous in terms of occupational exposure during manufacturing and recycling.

The RoHS Directive compliments the WEEE Directive 2002/96/EA (Waste from Electrical and Electronic Equipment) which mandates the treatment, recovery and recycling of electric and electronic equipment. By definition, RoHS regulates the use of hazardous substances in electric and electronic components while WEEE regulates their disposal.

In response to the RoHS compliance directive, we are pleased to inform you that all Gaynor Gasket & Seal standard fasteners are in compliance to this criterion.

Specialty Sealing Fasteners Since 1954

DFARS Compliance

DFARS is the acronym for Defense Federal Acquisition Regulation Supplement. When required, it invokes the Berry Amendment, also known as the "Preference for Domestic Specialty Metals." This amendment states that specialty metals used in the manufacture of fasteners be melted in the United States or qualifying country.

The Berry Amendment requires the United States Department of Defense to purchase select items, including those made from "specialty metals" such as stainless steel, exclusively from American sources. The follow-up regulations, DFARS Clause 252.225-7014, prohibits contractors and their suppliers from incorporating "specialty metals" (as defined in the clause) into military parts, components, and deliverables, unless the specialty metals have been melted in the United States or other qualifying country listed in DFARS 225.872-1 (currently Australia, Austria, Belgium, Canada, Denmark, Egypt, Finland, France, Germany, Greece, Israel, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland, Turkey, or United Kingdom).

Gaynor Gasket & Seal certifies that all products designated as "DFARS Compliant" comply with Defense Federal Acquisition Regulation Supplement (DFARS) Clause 252.225-7014.

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Phone: 978-658-5500
Toll-free: 888-493-8483

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Specialty Sealing Fasteners Since 1954


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