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 5990-01-134-2859
NSN 5925-00-391-6987
NSN 5996-01-227-4496
NSN 7035-01-649-0424
NSN 5905-01-003-2307
NSN 6685-01-555-1436
NSN 7035-01-523-6231
NSN 5905-01-030-9192
NSN 5945-01-316-8728
NSN 2925-01-509-3783
NSN 5990-01-442-3520
NSN 5855-00-532-0025