# DIBBS #SPE7M1-27-T-0521

DLA request for 50 approved-source piston rings

**Posted:** October 13, 2026
**Respond By:** October 23, 2026
**Identifier:** SPE7M1-27-T-0521
**NAICS:** 336413

The Defense Logistics Agency is seeking 50 piston rings for its Maritime Supply Chain.
- **Government buyer:** Defense Logistics Agency (DLA), DLA Weapons Support, Maritime Supply Chain.
- **Requested item:** 50 piston rings, NSN 4310-00-364-6580; manufacturer part number 859989-41.
- **Approved sources/OEMs:** **Honeywell International Inc.** and **Precision Rings Incorporated** are both listed for part number 859989-41.
- **Delivery and handling:** Delivery is required within 164 days after order. FOB origin; destination inspection and acceptance apply. Packaging must follow ASTM D3951 and applicable DLA requirements, with marking and labeling per MIL-STD-129.

### Description

RING, PISTON (QTY: 50, NSN: 4310-00-364-6580, Purchase Request: 7018680849)
  Approved Sources:
  - CAGE: 59364, Part No: 859989-41, Company: HONEYWELL INTERNATIONAL INC.
  - CAGE: 99121, Part No: 859989-41, Company: PRECISION RINGS INCORPORATED
 

[View original listing](https://www.dibbs.bsm.dla.mil/rfq/rfqrec.aspx?sn=SPE7M127T0521)