The defense industry often requires specification grade material for their products. Mil-spec materials are tough and function well in certain industry applications. Certifying a material to Mil-spec means the product maintains certain characteristics to meet physical strength, resistance to temperature, flammability and other environmental requirements.Certain industries require specification grade materials for applications that are proven to withstand certain environmental extremes.

According to the Department of Defense, Standardization documents are developed and used for products, materials, and processes that have multiple applications to promote commonality and interoperability among the Military Departments and the Defense Agencies and between the United States and its allies, and to limit the variety of items in the military supply system. The Acquisition Streamlining and Standardization Information System (ASSIST) database identifies approved defense and federal standardization documents, adopted non-government standards (NGS), and U.S. ratified materiel International Standardization Agreements (ISAs). Standardization documents include:
Defense specifications, standards, and handbooks developed in accordance with the consensus procedures established by this manual.
Commercial item descriptions (CIDs) and federal specifications and standards developed in accordance with the consensus procedures of the Federal Standardization Manual.
NGS developed under the consensus procedures of private sector standards organizations.
Materiel ISAs developed within NATO and other multinational security bodies and ratified by the United States.

Some of the most common Mil-specs are listed below, please contact your support team if you have a product that needs to meet a certain defense specification. We would be happy to assist.

SpecificationDescription
A-A-52430Pads, Cushioning, Personnel Protection Vehicular
A-A-52444Gaskets, Combination of Metal and Non-Asbestos Facing Material
A-A-59588Rubber Silicone
AMS 7276GRings, Seals, Fluorocarbon Rubber High-Temperature Fluid Resistant
AMS-3216FFlourocarbon (FKM) Rubber, High-Termperature, Fluid Resistant, Low Compression Set
AMS-3270JChloroprene (CR) Rubber Sheet Cotton Fabric Reinforced, Weather Resistant
AMS-3274
AMS-7276GRings, Sealing, Fluorocarbon Rubber, High-Temperature, Fluid Resistant, Low Compression Set
AMS-C-6183Cork and Rubber Composition Sheet for Aromatic Fuel and Oil Resistant Gaskets
ASTM D2000-03ARubber Products in Automotive Applications
A-A-52402
ASTM F104-2003Nonmetallic Gasket Materials
ASTM-D1056-07Flexible Cellular Materials - Sponge or Expanded Rubber 1,2
ASTM-D1710 91APTFE Basic Shapes, Rod and Heavy-Walled Tubing
ASTM-D-6576Flexible Cellular Rubber Chemically Blown
C-F-206Felt Sheet
DOD-I-24688Insulation Panel Open Cell Polyamine Foam
HH-C-576BCork Sheet
HH-P-151FCloth Inserted Rubber
HH-P-31FPacking and Lagging Material
HH-P-96 GPaper, Gasket Fiber (Animal or Plant) Sheet
MIL-B-117EBags, Sleeves and Tubing
MIL-C-6133 CCellular Elastomeric Materials, Molded or Fabricated Parts
MIL-C-6183BCork and Rubber Composition Sheet for Aromatic Fuel and Oil Resistant Gaskets
MIL-C-882ECloth Inserted Rubber
MIL-D-24709(SH)Distributed Isolation Material
MIL-DTL-117HBags, Heat Sealable
MIL-DTL-15562GMatting or Sheet Floor Covering, Insulating for High-Voltage Applications
MIL-G-1086EGasket Material, Synthetic Rubber (For Bolted Steel Tanks)
MIL-G-11491DGlass Washer, Electric, Portable
MIL-G-1149CGasket Materials, Synthetic Rubber, 50 and 65 Durameter Hardness
MIL-G-12803Cancelled see ASTM-F-104-03
MIL-G-12803CGasket Material, Non-Metallic
MIL-G-15324EGaskets, Metallic, Spiral Wound for Boilers
MIL-G-21610CGaskets, Heat Exchanger
MIL-G-24696-1AGasket Sheet, Non-Asbestos, Size and Tolerances
MIL-G-3036CGrommets, Rubber Hot Oil and Coolant Resistant
MIL-H-46354Headrest, Optical Instruments
MIL-I-22344DInsulated, Pipe, Thermal, Fibrous Glass
MIL-I-45208Inspection Systems Requirements
MIL-L-40069DLeather, Cattle Hide, Chrome Tanned, Cold-Climate
MIL-M-910FMats, Floor Standing
MIL-P-116JSee Mil-STD-2073 (Methods of Preservation)
MIL-P-14401Pads, Cushioning, Personnel Protection, Vehicular
MIL-P-15280JPlastic Material Unicellular
MIL-P-23199EPackaging and Packing Requirements for Special Purpose Components and Repair Parts
MIL-P-4861CPacking, Performed, Rubber
MIL-P-5510CPacking, Preformed, Straight Thread Tube
MIL-P-5516Packing, Preformed Petroleum Hydraulic
MIL-P-82745Packing, Preformed, Hydraulic Oil Compatible
MIL-P-83461/1BPacking, Preformed, Hydraulic Fluid Resistant
MIL-P-83461BPacking, Preformed, Petroleum, Hydraulic Fluid Resistant, Improved Performance
MIL-PRF-1149DSynthetic Rubber 50/65D
MIL-PRF-121GBarrier Materials, Greaseproof, Waterproof, Flexible Heat-Sealable
MIL-PRF-15624FRubber 50D
MIL-PRF-22191DBarrier Materials, Transparent, Flexible, Heat-Sealable
MIL-PRF-900FRubber Gasket Material, 45 Durometer Hardness
MIL-QQ-P-416FPlating Cadmium
MIL-R-14328BRubber Sheet, Synthetic, Medium Soft, General-Purpose Gasket Material (for Extreme Climatic Conditions)
MIL-R-15624ERubber Gasket, 50 Duro Max
MIL-R-25988BFluoro-Elastomer
MIL-R-2765DRubber Sheet Strip
MIL-R-3065ERubber Fabricated Products
MIL-R-46098CRubber, Sponge, Silicone, Closed Cell
MIL-R-6130CRubber, Cellular, Chemically Blown
MIL-R-6855/1Rubber, Synthetic Sheets
MIL-R-6855/5Rubber Synthetic Sheets, Channel Extruded
MIL-R-6855ERubber Synthetic Sheets, Strips, Molded and Extruded
MIL-R-7362DRubber, Synthetic, Solid, Sheet, Strip and Fabricated Parts, Synthetic Oil Resistant
MIL-R-83248-1Rubber, Fluorocarbon Elastometers, High-Performance Fluid and Compression Set Resistance
MIL-R-83248-2Rubber, Fluorocarbon Elastomers, High-Performance Fluid and Compression Set Resistant
MIL-R-83248CFluoro-Elastomer
MIL-83285Rubber, Ethylene-Propylene, General Purpose
MIL-R-83397ARubber, Polyurethane, Castable, Humidity Resistant
MIL-R-8791DRetainer, Packing, Hydraulic and Pneumatic TFE
MIL-R-900FGasket Material, Rubber 45 Duro
MIL-S-19622Stuffing Tube, Nylon
MIL-S-45351 BSeal, Engine Shroud
MS-28774Retainer, Packing Backup
MS-28775O-Ring Specs
MS-28777CWasher, Flat, Aircraft Hydraulic Backup
MS-28778Packing, Preformed Straight Thread Tube
MS-28782Retainer, Packing, Back-Up Teflon
MS-28783 FRing, Gasket, Back-Up PTFE
MS-28932Felt Strip, Packing Gland
MS-29513Packing, Preformed, Hydrocarbon, Fuel Resistant, O-Ring
MS29561 CPacking, Preformed, O-Ring, Synthetic Lubricant Resistant
MS-51007CGasket, Rubber, Synthetic
NAS-1523Packing with Retainer
SAE-AS8791Hydraulic and Pneumatic Retainers (Back-Up Rings), Polytetrafluoroethylene (PTFE) Resin
ZZ-R-765ESilicone Rubber