This specification covers a butyl (IIR) rubber in the form of sheet, strip, tubing, extrusions, and molded shapes. This product has been used typically for parts such as grommets requiring resistance to phosphate esters or low permeability to gases, but usage is not limited to such applications. Not suitable for use in contact with petroleum-base fluids due to excessive swell. AMS3238 is no longer valid for O-rings and other compression seals. For O-rings and other compression seals, the requirements of AMS7338 shall be met wherever AMS3238 is specified.
SAE AMS3238G-2013 Referenced Document
ASTM D1149-07 Standard Test Methods for Rubber Deterioration-Cracking in an Ozone Controlled Environment*, 2024-04-20 Update
ASTM D2137-11 Standard Test Methods for Rubber PropertyBrittleness Point of Flexible Polymers and Coated Fabrics*, 2024-04-20 Update
ASTM D2240-05 Standard Test Method for Rubber Property8212;Durometer Hardness*, 2024-04-20 Update
ASTM D395-03 Standard Test Methods for Rubber Property8212;Compression Set*, 2024-04-20 Update
ASTM D412-06 Standard Test Methods for Vulcanized Rubber and Thermoplastic Elastomers-Tension*, 2024-04-20 Update
ASTM D471-12 Standard Test Method for Rubber Propertymdash;Effect of Liquids*, 2024-04-20 Update
ASTM D573-04 Standard Test Method for Rubber8212;Deterioration in an Air Oven*, 2024-04-20 Update
ASTM D624-00 Standard Test Method for Tear Strength of Conventional Vulcanized Rubber and Thermoplastic Elastomers*, 2024-04-20 Update