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 6135-00-789-2865
NSN 5975-01-443-2398
NSN 5855-01-040-3881
NSN 6650-00-937-5319
NSN 5990-00-152-3929
NSN 5835-01-110-0697
NSN 6685-01-595-1525
NSN 6105-01-443-6858
NSN 5915-01-604-9404
NSN 5920-01-487-8597
NSN 2925-01-422-1542
NSN 5996-00-210-8409