Home · FSC 5331 O-Ring · NSN 5331-00-753-1849

NSN 5331-00-753-1849 — O-Ring

NIIN 00-753-1849 · unit of issue EA · AAC Z (insurance item) · source of supply SMS

Buying rhythm

from 15 government buys since 2017

The government has bought this item about every 6 months (irregular, gaps vary ±118%). Last buy Aug 27, 2026. The gaps are too uneven to put a window on the next one. 1 solicitation is open right now.

How well this works: for irregular items, "next buy about one typical gap after the last, give or take 151 days" caught the actual next buy 31% of the time across 21,161 past buys, against 24% for a fixed "one year later" guess. A rhythm, not a schedule: DLA buys when stock and demand say so. Every item due for a buy now.

NSN 5331-00-753-1849 is the national stock number for an o-ring in federal supply class 5331 (O-Ring). It cross-references to 3 manufacturer part numbers from 2 CAGE codes, including Alfa Laval Inc, Jednolity Indeks Materialowy - Uniform Material Index; the primary is 37483. The unit of issue is EA and the FLIS list price is $51.64.

The U.S. government has bought this item 19 times on record, 4 of them in the last 24 months, most recently on August 27, 2026 at $41.46 each from Kyodo Shipping & Trading Corp Usa. The median unit price paid over 36 months is $38.79. 1 solicitation is open right now, the soonest due October 5, 2026 for 144 EA. No seller has confirmed stock of it here in the last 60 days; watching the number is free and the first listing triggers an alert.

part numbers from 2 CAGEs

open solicitation, all agencies

government buys in 24 months · median $38.79

sellers with confirmed stock

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Cross-references

Part numbers filed against this stock number, with the manufacturer (CAGE) and the FLIS reference codes.

Part number	CAGE	Manufacturer	Reference	Variation
99137483	71871	Alfa Laval Inc	3 · Design control (vendor)	2 · Fully interchangeable
37483	71871	Alfa Laval Inc	5 · Secondary reference	9 · Reference only
5331PL0650772	9009H	Jednolity Indeks Materialowy - Uniform Material Index	6	9 · Reference only

Government demand

Open DLA RFQs (DIBBS)

SPE7L126U0765 · 144 EA · due Oct 5, 2026 · Y · AMSC R · DIBBS

What the government paid

Date	Vendor	Qty	Unit cost	Buyer	Reference
Aug 27, 2026	Kyodo Shipping & Trading Corp Usa 79VM8	82	$41.46	Dla	SPE7L026F6910
Feb 19, 2026	Kyodo Shipping & Trading Corp Usa 79VM8	56	$41.46	Dla	SPE7L026F1775
Aug 20, 2025	Pioneer Industries, LLC 66200	41	$38.79	Dla	SPE7L325V6875
Feb 26, 2025	Pioneer Industries, LLC 66200	43	$35.42	Dla	SPE7L325V3317
Jul 24, 2024	Pioneer Industries, LLC 66200	25	$40.80	Dla	SPE7L124V7777
May 23, 2024	Kampi Components Co Inc 7Z016	40	$36.37	Dla	SPE7L124V6201
Nov 17, 2023	Gi Group Holdings Inc 8KWJ8	25	$37.88	Dla	SPE7L324F0871
Sep 15, 2022	Echelon Supply And Service, Inc. 61125	57	$34.50	Dla	SPE7L322F290E
Mar 16, 2022	Echelon Supply And Service, Inc. 61125	6	$34.50	Dla	SPE7L322F8231
Feb 17, 2022	Echelon Supply And Service, Inc. 61125	18	$34.50	Dla	SPE7L322F6716
Feb 17, 2022	Echelon Supply And Service, Inc. 61125	8	$34.50	Dla	SPE7L322F6694
Feb 17, 2022	Echelon Supply And Service, Inc. 61125	57	$34.50	Dla	SPE7L322F6687
Dec 20, 2021	Echelon Supply And Service, Inc. 61125	26	$34.50	Dla	SPE7L322F4634
Oct 18, 2021	Echelon Supply And Service, Inc. 61125	8	$34.50	Dla	SPE7L322F2382
Dec 31, 2020	Echelon Supply And Service, Inc. 61125	16	$34.50	Dla	SPE7L321F6346
Oct 29, 2020	Echelon Supply And Service, Inc. 61125	29	$34.50	Dla	SPE7L321F3330
Oct 22, 2020	Echelon Supply And Service, Inc. 61125	44	$34.50	Dla	SPE7L321F2309
Aug 7, 2017	Kampi Components Co Inc 7Z016	39	$31.31	Dla	SPM5EY13D05090688
Oct 23, 2015	Kampi Components Co Inc 7Z016	172	$30.70	Dla	SPM5EY13D05090141

Sources: DLA DIBBS procurement history (unit cost), DLA award history, FPDS (all agencies), SAM.gov notices. 19 buys on record in total.

Sellers with confirmed stock

No seller has confirmed stock on this NSN in the last 60 days. Watch it and we will email you when one does, or request a quote on 37483.

Listings appear here only while the seller has confirmed them within 60 days. Sellers: list this part free.

DLA management data

FLIS unit price: $51.64
Unit of issue: EA
Acquisition advice: Z — Insurance item
Source of supply: SMS
Effective: Oct 1, 2025

About this page

An NSN is 13 digits: the 4-digit Federal Supply Class and the 9-digit NIIN. Cross-references come from the federal logistics record; demand from DLA DIBBS, SAM.gov and FPDS; ADs from the Federal Register. Refreshed nightly. Market Pulse shows the whole market.