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 6130-01-181-3373
NSN 6135-01-659-3426
NSN 5925-01-509-9040
NSN 6150-01-218-4507
NSN 5910-00-764-2177
NSN 5930-00-578-9301
NSN 6130-00-855-7498
NSN 5930-01-634-0659
NSN 6220-01-068-3100
NSN 5985-01-412-2897
NSN 5905-01-134-8717
NSN 5950-00-503-2802