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 6645-01-629-9657
NSN 5950-01-583-6563
NSN 6220-01-584-5082
NSN 5915-00-241-3676
NSN 6645-01-206-4888
NSN 5985-01-287-9365
NSN 5998-01-014-5465
NSN 6145-00-565-9560
NSN 5965-00-080-2045
NSN 5935-01-344-7408
NSN 6110-01-536-2470
NSN 2925-01-197-7864