Mil-Spec rubber refers to elastomers formulated and tested to meet strict U.S. military performance criteria for use in defense, aerospace, and demanding industrial applications. These materials must conform to specifications such as MIL-R-6855 (fuel- and oil-resistant nitrile and neoprene grades), MIL-G-1149 (neoprene and nitrile sheet in Type I, Class 1 and 5 hardness), and ASTM D2000 (letter-code system covering EPDM, NBR, Neoprene and more across precise durometer, temperature, and environmental-resistance classes).
By adhering to these standards, mil-spec rubber guarantees consistent hardness tolerances (±5 Shore A), tensile strength, compression-set, and service-temperature ranges—from as low as −65 °F to over +400 °F. Whether used for rubber gaskets, seals, extruded profiles, or molded components, compliant Mil-Spec materials deliver the durability, chemical resistance, and dimensional stability that mission-critical applications demand.
Materials, Products & Spec Comparison
Qualiform’s Mil-Spec rubber portfolio spans a range of elastomers—each chosen to satisfy specific performance criteria and product applications. Our in-house compounding lab formulates nitrile (Buna-N) and neoprene to MIL-R-6855 for fuel- and oil-resistance; EPDM, NBR, and neoprene blends per ASTM D2000 for dynamic seals and mounts; silicone (VMQ) to AMS 3302/3304 for extreme-temperature hoses and profiles; and Viton® (FKM) to AMS 7276 for chemical-attack resistance.
These materials are delivered as rubber bands, grommets, washers, sheets, and fully molded parts—all with strict hardness, tensile, and compression-set tolerances. Below is a quick comparison of key Mil-Spec standards, the materials we use, and their typical applications:
| Specification | Material | Typical Use |
|---|---|---|
| MIL-R-6855 | Nitrile & Neoprene | Fuel-resistant gaskets & hoses |
| MIL-G-1149 | Neoprene & Nitrile | Seals & grommets (Type I, Class 1 & 5) |
| ASTM D2000 | EPDM, NBR, Neoprene | Dynamic seals & vibration mounts |
| AMS 3302/3304 | Silicone (VMQ) | High-temp hoses & extruded profiles |
| AMS 7276 | Viton® (FKM) | Chemical-resistant seals & washers |
Manufacturing & Quality Controls
At Qualiform, precision begins with our diverse rubber molding processes—injection, compression, transfer, and extrusion—plus specialized rubber-to-metal bonding. Whether you need short-run prototyping or high-volume production, we tailor tooling and press parameters to achieve tight dimensional tolerances and repeatable performance.
Our ISO 9001:2015–certified laboratory rigorously tests every batch and finished part. We perform durometer checks (±2 Shore A), tensile and elongation measurements, and compression-set evaluations to ensure compliance with Mil-Spec requirements. Low-temperature flexibility tests (down to −65 °F) and chemical-immersion trials validate performance under extreme conditions.
To support full traceability, each lot ships with detailed QC reports, including actual vs. specified values for hardness, tensile strength, and compression-set. This commitment to robust quality controls guarantees that your mil-spec rubber bands, grommets, sheets, and custom parts perform reliably in the field.
Applications & Industries
- Defense & Weapon Systems: Seals, grommets & washers for armored vehicles and ordnance fixtures—vibration- and chemical-resistant.
- Aerospace & Avionics: Rubber bands & vibration mounts for satellites and cockpit seals—reliable from –65 °F to +400 °F.
- Marine & Naval: EPDM & neoprene sheets and molded parts that resist UV, salt spray & hydrocarbons.
- Ground Vehicles & Equipment: Hoses, bumpers & bushings built to MIL-G-1149/ASTM D2000 standards for mud, dust & hydraulic fluids.
- Support & Field Gear: Bands, gaskets & bonded mounts for generators, refueling stations & mobile power units.
Why Choose Qualiform for Mil-Spec Rubber & Next Steps
With over 45 years of expertise, Qualiform pairs large-part molding (up to 56″ molds) with a fully equipped ISO 9001:2015 lab—delivering custom Mil-Spec rubber bands, grommets, sheets, washers, and complex parts on tight turnaround. Our in-house compounding ensures exact durometer, tensile, and compression-set tolerances per MIL-R-6855, MIL-G-1149, ASTM D2000, and AMS specs.
