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 5905-01-197-5921
NSN 5905-00-900-5490
NSN 5925-01-456-9173
NSN 6645-01-441-2762
NSN 2925-00-984-7525
NSN 5985-01-579-3267
NSN 5965-01-367-6483
NSN 6220-00-023-4344
NSN 7035-00-193-2269
NSN 6685-01-014-8246
NSN 5996-01-115-6121
NSN 6220-01-003-9126