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 5905-01-423-1541
NSN 2925-01-265-2853
NSN 5965-01-284-5076
NSN 5950-00-184-8271
NSN 5920-01-461-8719
NSN 2925-01-556-0333
NSN 6150-00-956-8679
NSN 6645-00-963-6354
NSN 5915-01-408-8824
NSN 6135-00-377-9165
NSN 5996-01-472-2006
NSN 5985-00-111-3503