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 5905-01-128-0336
NSN 6145-01-355-0147
NSN 6240-01-451-1409
NSN 5855-01-305-2196
NSN 5920-01-519-0756
NSN 5965-01-514-7231
NSN 2925-01-228-6554
NSN 5975-01-414-6371
NSN 5999-01-455-9402
NSN 7035-01-141-8076
NSN 5910-00-229-9567
NSN 6320-00-564-2772