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 6645-00-802-7991
NSN 5965-00-539-7778
NSN 6220-00-489-8571
NSN 5925-00-926-8425
NSN 6610-01-642-0258
NSN 6685-01-141-7746
NSN 5990-01-015-7502
NSN 5950-00-328-1049
NSN 5985-01-426-2943
NSN 6135-01-607-3013
NSN 6240-01-657-2378
NSN 6610-01-269-5437