A circular shaped item with an aperture manufactured to predetermined dimensions and designed for use as a seal in stuffing boxes, packing nuts, and the like. It may be (1) any nonmetallic molded or formed ring (except solid (without joint) rings having a square or rectangular cross section); or (2) any shredded metal or metal foil type metallic or semimetallic rings. Excludes felt items but includes multimaterial items in which one of the materials is felt. For solid (without joints) nonmetallic items with a square or rectangular cross section, see washer (as modified) and gasket. For rubber items specifically designed for weather-proofing doors, windows, chests, and the like see seal, nonmetallic angle; seal, nonmetallic channel; and seal, nonmetallic, special shaped section. For circular (with aperature) nonmetallic items with a solid round cross-section see o-ring. Excludes cup, compression; gasket; washer (as modified); and felt, mechanical, preformed.
Classification: Gaskets,washers & other seals
NSN 5975-01-195-5962
NSN 6145-00-993-3377
NSN 6320-00-646-3311
NSN 5950-00-382-7741
NSN 6150-00-065-2656
NSN 5935-01-526-1003
NSN 5855-01-217-6857
NSN 5985-00-598-4707
NSN 6150-01-399-7772
NSN 6240-01-153-8015
NSN 5990-00-867-1122
NSN 5915-00-254-3436