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 2925-01-061-4012
NSN 5925-01-085-1981
NSN 5855-01-327-2681
NSN 5998-01-435-7398
NSN 5975-01-387-1753
NSN 5999-01-401-5322
NSN 6240-00-803-2777
NSN 6145-01-166-3714
NSN 5930-01-098-3558
NSN 7035-01-397-1519
NSN 6135-00-299-6918
NSN 5905-01-368-5044