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 6620-01-288-8249
NSN 6110-01-120-7652
NSN 5905-01-134-2706
NSN 7035-01-204-7481
NSN 6685-01-146-4498
NSN 6150-00-885-8475
NSN 6240-01-272-9019
NSN 5905-01-520-7461
NSN 6620-01-222-0143
NSN 6220-01-417-2675
NSN 4140-00-856-8115
NSN 2925-01-139-7103