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 5910-00-325-9246
NSN 6685-01-141-7034
NSN 6240-00-230-2716
NSN 7035-01-585-1653
NSN 7035-01-271-1643
NSN 6150-00-889-7326
NSN 4140-01-462-5289
NSN 5915-01-200-0753
NSN 5975-01-498-0835
NSN 6145-00-179-2493
NSN 2925-00-868-2733
NSN 5905-00-433-1929