National Item Identification Number

01-143-8992
011438992
2520-01-143-8992
2520011438992

National Stock Number

Item Name

RING,PISTON

Federal Supply Class

2520

Description

A circular, single or multipiece item, metallic or nonmetallic in composition, designed to be fitted in a circumferential groove in a piston and to spring outward against the cylinder wall to function as a seal or wiper. It is supplied in various cross-sectional shapes and is cut through at one point to allow for installation in the piston ring groove. It may include an expander. Excludes PACKING, PREFORMED; RETAINER, OIL SEAL; RETAINER, PACKING; RING, RETAINING; RING WIPER; and SEAL RING, METAL.

Commercial and Government Entity Code (Supplier Data)

---

75160

---

---

75755

---

---

Reference Numbers (Part Numbers)

AT37793
AT37793

Required Categories

CROSS-SECTIONAL SHAPE STYLE
RING STYLE
III END ITEM IDENTIFICATION

Required Description

A1 PLAIN RECTANGULAR, STRAIGHT FACE
1 CONCENTRIC
3805-00-283-2749