Specification Grade Silicones

BMS Boeing Material Specification Silicone Sheets & Uncured Compounds

ElastaPro manufactures a comprehensive line of Boeing Material Specification (BMS) solid silicone sheeting and uncured silicone compounds engineered for high-reliability commercial, defense, and aerospace applications. Developed by The Boeing Company, BMS standards govern the physical, chemical, mechanical, and thermal performance of non-metallic materials installed across commercial airliners, military transports, and aerospace defense platforms.

Whether your engineering requirements call for high-tear-resistance door seals, low-compression-set flange gaskets, fuel-resistant fluorosilicone, or fire-retardant interior barriers, ElastaPro BMS-compliant silicones deliver verified lot-to-lot consistency. Every batch is Made in the USA at our Santa Fe Springs, California facility under our AS9100D and ISO 9001:2015 certified quality management system and shipped with a complete Certificate of Analysis (COA).

Need BMS Aerospace Grade Silicone Sheeting or Slit Rolls?

We supply continuous roll stock, pre-cut solid sheets, and custom uncured compounds across all BMS silicone callouts with low minimum order quantities, optional pressure-sensitive adhesives (PSA), and rapid turnarounds.

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BMS Silicones from ElastaPro

Boeing Material Specifications classify silicone and fluorosilicone elastomers by durometer, thermal endurance, fluid immersion resistance, and dynamic mechanical properties.

BMS Spec Material Classification / Description Primary Application Focus
BMS 1‑52 High‑performance silicone rubber engineered for flexibility across a wide temperature range. Seals and gaskets requiring long‑term flexibility and environmental resistance in aerospace systems.
BMS 1‑53 Listed as a Boeing silicone specification; detailed public description not provided in available sources. General aerospace silicone applications (inference based on inclusion in Boeing silicone spec list).
BMS 1‑57 High‑performance synthetic silicone rubber with strong flexibility, durability, and environmental resistance. Aerospace seals, gaskets, gap fillers, and joint sealing across wide temperature ranges.
BMS 1‑62 Specialty silicone compound offering superior electrical and thermal stability. Applications requiring electrical/thermal stability in aerospace environments.
BMS
1-71		 Fuel‑resistant fluorosilicone rubber, Class 2. Critical aerospace sealing applications requiring fuel resistance.
BMS 1‑72 General‑purpose silicone rubber compound for seals and molded components. Broad‑use aerospace seals and molded silicone parts.
BMS 1‑74 Low‑compression‑set silicone designed for long‑term sealing reliability. Long‑duration sealing applications where compression‑set performance is critical.
BMS 1‑76 Advanced fluorosilicone rubber with enhanced resistance to fuels and solvents. Fuel‑ and solvent‑exposed aerospace sealing environments.

Key Performance Advantages

  • Extreme Thermal Cycling Endurance: Retains elastomeric sealing force and structural integrity across severe altitude temperature swings ranging from sub-zero conditions down to -100°F (-73°C) up to +450°F (+232°C).
  • Ozone & Environmental Weathering Immunity: Resists degradation from high-altitude ultraviolet (UV) radiation, atmospheric ozone, and harsh weather exposure.
  • Low Compression Set: Engineered to resist permanent deformation under continuous bolt pressure, preventing long-term seal leakage.
  • Precision Converting Ready: Easily converted via die-cutting or waterjet cutting into flat aerospace gaskets, or supplied with factory-applied Pressure Sensitive Adhesive (PSA) backings.

Boeing Airframe & Defense Applications

  • Aircraft Environmental Control Systems (ECS): Flexible ducting seals, air-handling unit gaskets, and pressure cabin seals.
  • Flight Hardware Weather-Sealing: Cargo door gaskets, window seals, access hatch barriers, and optical enclosure seals.
  • Avionics & Radar Enclosures: Environmental sealing gaskets and vibration-damping pads for sensitive defense electronics.
  • Vibration Dampening Pads: Shock-absorbing mounts and anti-chafe strips installed adjacent to primary airframe structures.

Note: ElastaPro also makes other types of aerospace silicones and military silicones.

Frequently Asked Questions About BMS Silicone

What is BMS silicone, and why is it specified in aerospace manufacturing?

BMS stands for Boeing Material Specification. It represents a strict set of engineering standards established by Boeing to define the required physical, chemical, and thermal properties of materials used on aircraft. Engineers specify BMS-compliant silicone to guarantee safety, operational reliability, and full material traceability across commercial and defense aerospace supply chains.

Which BMS numbers cover solid silicone versus fluorosilicone and sponge?

Solid silicone rubber callouts include BMS 1-53, BMS 1-55, BMS 1-60, BMS 1-72, BMS 1-74, and BMS 1-82. BMS 1-76 specifically covers fuel-resistant fluorosilicone rubber, while BMS 1-57 covers cellular silicone sponge materials.

What product forms does ElastaPro offer for BMS silicone?

ElastaPro supplies BMS silicone as ready-to-fabricate solid sheet stock (in continuous rolls up to 60″ wide or pre-cut sheets from .010″ to .500″ thick) and as custom-compounded uncured silicone stock ready for compression, transfer, or injection molding.

Can ElastaPro supply BMS silicone with adhesive backing?

Yes. ElastaPro BMS solid silicone sheeting can be supplied with factory-applied pressure-sensitive adhesive (PSA) backings to simplify gasket installation during aircraft assembly. Options include standard acrylic adhesives or high-temperature silicone adhesives protected by a peel-off release liner.