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 6320-00-115-0883
NSN 6685-00-589-5445
NSN 6685-01-414-1904
NSN 6620-01-231-3528
NSN 5855-01-302-2086
NSN 6135-00-635-9187
NSN 6105-01-214-4804
NSN 5915-01-492-9691
NSN 5965-00-026-9408
NSN 7035-00-052-2188
NSN 2925-00-142-0641
NSN 6320-00-553-8427