Minor Rubber is a leading manufacturer of high-quality mil-spec grommets specifically engineered to meet the demanding requirements of military and defense operations. Our US-based facility produces precision components from complete lines of custom rubber products used for electrical insulation and environmental sealing, as well as noise control and vibration isolation. We proudly serve the OEM and replacement part markets, maintaining an extensive inventory of rubber grommets for industrial distributors worldwide.
NASM 3036 Compliant Grommets for Defense Procurement
All mil-spec grommets are manufactured in the USA. These military-grade components are made from NASM 3036 Composition A and B materials that are tested periodically to meet or exceed the rigorous requirements of the specification.
At Minor Rubber, we have earned a reputation for producing high-quality rubber parts as a direct result of our proven rubber molding capabilities. Our attention to detail and commitment to excellence for every project ensure that your mil-spec grommets will meet or exceed your expectations.
Military Specification Material Compositions
Our mil-spec grommets are available in two primary compositions dictated by military standards.
Composition A (Buna-N)
Manufactured using nitrile rubber, or Buna-N, Composition A grommets are used for environments that require extreme resistance to aggressive oils and ultraviolet rays.
Composition B (Silicone)
Manufactured using high-performance silicone, Composition B grommets are used for projects requiring resilience against extreme temperatures and prolonged ozone exposure.
Request a Quote for Military Spec Grommets
Whether you need a large volume of standard MS35489 grommets or require NASM 3036 compliant materials for a completely different custom molded component, our team is ready to deliver. Reach out to Minor Rubber today to discuss your exact military specifications.
FAQs
What is the difference between AN-931 and MS35489 grommets?
MS35489 is the current military specification that superseded the older AN-931 standard. However, many legacy defense blueprints still call out AN-931 part numbers. We maintain inventory and can fulfill orders under both designations.
How do I choose between Composition A and Composition B?
Composition A is the superior choice for environments involving heavy exposure to oils and fuels. Composition B is the ideal selection when the component will face extreme thermal cycling or severe temperature fluctuations.
Do you provide Certificates of Conformance for military orders?
Yes, we provide full certifications of conformance with your order to verify that the grommets meet all NASM 3036 material and dimensional requirements. This documentation ensures complete traceability for defense contractors.
Did you know we have the ability to manufacture custom orders?
View Custom Capabilities