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 2925-00-701-9991
NSN 6320-01-622-5493
NSN 2925-01-649-7543
NSN 6610-01-534-7683
NSN 6240-01-394-5320
NSN 6130-01-431-5796
NSN 7035-01-462-0516
NSN 6645-01-338-9152
NSN 6145-01-170-3797
NSN 5960-01-112-8273
NSN 6685-01-260-7365
NSN 5985-01-008-4787