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 5925-01-200-7813
NSN 6220-01-445-6575
NSN 6220-01-659-1023
NSN 5910-01-469-8568
NSN 5950-00-971-8993
NSN 6645-01-316-4900
NSN 4140-01-610-6953
NSN 5975-00-752-7644
NSN 5950-01-501-6316
NSN 5855-01-391-3819
NSN 5999-01-131-2718
NSN 2925-00-620-4438