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 5835-01-329-4814
NSN 5920-01-010-3293
NSN 5855-00-760-3870
NSN 6135-01-445-5546
NSN 5996-01-340-5268
NSN 6145-00-678-0429
NSN 2925-01-153-7794
NSN 5975-01-166-5656
NSN 5835-00-221-6628
NSN 6685-00-269-0438
NSN 6620-01-530-1229
NSN 6650-00-064-7199