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 6220-00-423-6878
NSN 6645-00-456-2923
NSN 5835-01-442-6482
NSN 6645-01-594-0285
NSN 5999-01-519-8595
NSN 6610-00-106-3401
NSN 2925-01-376-9236
NSN 5910-01-085-6210
NSN 5855-01-087-1417
NSN 6650-01-076-6685
NSN 5935-01-515-5879
NSN 6240-01-137-5888