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 5910-01-371-5277
NSN 5985-01-463-9112
NSN 6135-00-134-6648
NSN 5935-01-081-7562
NSN 6650-01-484-3013
NSN 6240-00-877-6206
NSN 5905-01-042-2763
NSN 6685-01-605-1375
NSN 6130-01-039-8287
NSN 6220-00-187-0649
NSN 6220-01-025-1373
NSN 6650-01-172-2226