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 5985-00-263-7870
NSN 5990-01-363-5728
NSN 5945-01-372-5576
NSN 5998-00-541-8792
NSN 6610-00-495-9053
NSN 6620-00-952-4278
NSN 5996-01-440-9660
NSN 5895-00-022-8561
NSN 6150-00-280-4500
NSN 5855-01-246-0342
NSN 6240-00-296-0488
NSN 6150-00-263-3451