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 6610-01-101-5909
NSN 6320-00-164-4087
NSN 6650-00-453-9195
NSN 5935-01-400-0514
NSN 6685-01-329-7462
NSN 6150-01-623-1271
NSN 6645-01-519-2220
NSN 5998-00-218-1360
NSN 5950-01-239-8821
NSN 6110-00-476-3302
NSN 5905-01-098-3106
NSN 6130-01-111-9246