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 5905-00-389-6252
NSN 6685-01-435-4366
NSN 6220-01-433-2698
NSN 2925-01-518-3453
NSN 5905-01-647-8316
NSN 5835-01-416-6455
NSN 6110-00-845-4871
NSN 6620-01-200-6493
NSN 5965-01-221-0569
NSN 5910-01-167-8593
NSN 6130-01-246-9081
NSN 5950-01-255-9054