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 6220-01-560-8421
NSN 5925-01-358-3248
NSN 6240-01-453-7614
NSN 6220-01-307-2447
NSN 5950-01-521-3985
NSN 6320-01-592-4567
NSN 6320-01-250-0290
NSN 6645-01-496-0073
NSN 6620-01-646-2751
NSN 2925-01-476-3224
NSN 5950-01-273-1042
NSN 5990-01-296-4535