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 6135-00-935-8769
NSN 5975-01-174-9375
NSN 5999-01-282-4696
NSN 5905-00-852-2533
NSN 5975-01-381-2763
NSN 6130-00-354-0251
NSN 6240-00-878-1965
NSN 6650-01-463-8405
NSN 6220-00-258-2967
NSN 5925-01-296-5360
NSN 5975-01-024-3950
NSN 5895-00-173-2538