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 6645-00-796-7206
NSN 6240-00-801-5941
NSN 6145-01-262-2160
NSN 5920-01-566-6982
NSN 5945-00-595-6769
NSN 5855-01-619-4199
NSN 6685-00-904-4845
NSN 5925-00-204-0314
NSN 6610-01-300-8383
NSN 6105-01-137-8046
NSN 5895-01-188-0365
NSN 6135-01-265-1384