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 5975-00-014-0784
NSN 5985-01-451-1436
NSN 5910-00-615-9975
NSN 6145-00-216-6613
NSN 2925-01-618-5706
NSN 5925-01-446-8106
NSN 5930-01-050-8435
NSN 2925-01-251-5725
NSN 5905-00-186-9044
NSN 5996-01-247-2986
NSN 6610-00-151-8074
NSN 5905-01-095-3805