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 5835-00-170-5238
NSN 5965-00-378-3403
NSN 5950-01-564-7699
NSN 5925-00-915-1204
NSN 5915-00-643-5989
NSN 6135-00-577-8429
NSN 6220-01-051-2080
NSN 5835-00-378-1429
NSN 5996-01-429-0390
NSN 6685-01-567-9425
NSN 5985-01-157-9426
NSN 7035-01-202-8699