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 2925-00-808-5077
NSN 6685-00-930-9257
NSN 2925-01-516-0124
NSN 7035-01-416-5910
NSN 6620-00-948-3801
NSN 6220-00-235-3565
NSN 5910-01-215-6066
NSN 6130-00-151-5001
NSN 6645-00-456-0080
NSN 5996-00-689-9228
NSN 2925-01-228-6554
NSN 6650-01-519-6198