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 2925-01-522-5631
NSN 6135-01-246-0308
NSN 6135-00-998-5884
NSN 6240-00-322-9928
NSN 6145-01-441-8571
NSN 6320-01-271-0247
NSN 4140-00-866-7015
NSN 2925-01-157-9204
NSN 5910-01-045-7154
NSN 5950-00-644-5727
NSN 6685-00-089-9856
NSN 5990-01-285-1868