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 6145-01-351-1935
NSN 5835-00-552-9033
NSN 5975-00-765-4271
NSN 6685-01-433-7958
NSN 6610-01-182-9828
NSN 2925-00-933-0200
NSN 5910-00-419-4195
NSN 6685-01-410-7583
NSN 5935-00-808-0618
NSN 4140-01-198-1452
NSN 2925-01-415-0264
NSN 2925-01-197-7864