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 6620-01-442-8444
NSN 5990-01-581-1961
NSN 6220-00-052-4446
NSN 5950-01-245-9883
NSN 5990-00-342-4388
NSN 6135-00-276-7625
NSN 4140-00-415-6513
NSN 2925-01-148-2023
NSN 5855-01-426-5589
NSN 6130-01-212-3832
NSN 6130-01-366-3919
NSN 6320-00-593-0379