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 6645-01-632-6263
NSN 5895-01-531-4037
NSN 6685-01-596-1480
NSN 5935-01-473-9220
NSN 5910-00-128-7774
NSN 6320-00-682-3448
NSN 5975-01-322-4886
NSN 6105-00-491-7293
NSN 5990-01-647-4669
NSN 5835-00-649-9402
NSN 6145-00-722-9700
NSN 5855-01-263-7669