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 5945-00-706-3620
NSN 6110-00-978-8329
NSN 5920-01-487-4195
NSN 6135-01-093-7426
NSN 5905-00-922-7220
NSN 5935-01-006-0240
NSN 5965-01-532-9530
NSN 5985-01-409-2865
NSN 5915-01-501-5222
NSN 6620-01-564-3041
NSN 4140-01-641-4754
NSN 5920-01-244-4987