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 6610-01-415-5877
NSN 5935-01-263-5956
NSN 6145-01-645-6806
NSN 5975-00-674-8339
NSN 7035-00-803-3056
NSN 5990-01-414-7618
NSN 5895-00-995-2336
NSN 6320-01-532-7491
NSN 5925-01-433-5323
NSN 5960-00-024-9783
NSN 5855-00-466-2309
NSN 5999-01-602-2428