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 5945-00-890-9479
NSN 6610-01-440-0604
NSN 6145-01-011-3231
NSN 5990-01-485-0260
NSN 6135-01-443-7716
NSN 5990-00-630-6154
NSN 5855-00-304-7163
NSN 5975-01-643-5607
NSN 5925-01-079-6064
NSN 5999-01-152-2313
NSN 6650-01-487-6274
NSN 5996-01-022-2248