# DIBBS #SPE7L3-26-T-267F

Procurement of Back-Up Ring, Preformed Packing (NSN 5330-01-654-1566)

**Posted:** September 18, 2026
**Respond By:** September 28, 2026
**Identifier:** SPE7L3-26-T-267F
**NAICS:** 339991

This opportunity is for the procurement of a Back-Up Ring, Preformed Packing (NSN 5330-01-654-1566) for vehicle support by the Defense Logistics Agency (DLA) Land and Maritime.
- Government Buyer:
  - Defense Logistics Agency (DLA), Land and Maritime, Land Supplier Operations Vehicle Support
  - Buyer contact: Susan Diamond
- OEMs and Vendors:
  - Greene Tweed & Co Inc is the approved source (part number 7439FT4780)
- Products Requested:
  - Back-Up Ring, Preformed Packing
    - NSN: 5330-01-654-1566
    - Part Number: 7439FT4780
    - Quantity: 1
- Unique or Notable Requirements:
  - FAA airworthiness approval required
  - Supply chain traceability documentation must be provided
  - Delivery required within 20 days, FOB Origin
  - Domestic sourcing and packaging requirements apply
- Technical documentation is available via DLA portal
- Solicitation is open for fast award

### Description

BACK-UP RING, PREFORMED (QTY: 1, NSN: 5330-01-654-1566, Purchase Request: 7018368300)
  Approved Sources:
  - CAGE: 5F573, Part No: 7439FT4780, Company: GREENE TWEED & CO INC
 

[View original listing](https://www.dibbs.bsm.dla.mil/rfq/rfqrec.aspx?sn=SPE7L326T267F)