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 6650-00-693-2955
NSN 2925-00-592-2819
NSN 6685-01-018-4439
NSN 5905-00-052-7865
NSN 5930-00-314-5137
NSN 5835-01-293-6453
NSN 6105-00-837-0707
NSN 6620-01-558-6558
NSN 7035-00-541-8516
NSN 6135-00-593-6831
NSN 6685-01-072-0858
NSN 4140-00-555-3856