PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

11321Gland,lower Cylinder Head

Rps-Fl, Inc. Dba Rps Inc · NSN 4320-01-084-2090 · FSC 4320 · No Item Name Available
Verified by PartsTable
NSN 4320-01-084-2090 — this item is cataloged by the U.S. Government under National Stock Number 4320-01-084-2090. Primary manufacturer part number: 11321.
Features
  • Gland,lower Cylinder Head — FSC 4320
  • 4 verified cross-references
  • Primary manufacturer: Rps-Fl, Inc. Dba Rps Inc
Applications
  • Hydraulic and pneumatic systems
  • Industrial process pumping
  • Military vehicle hydraulics
General Description

The Gland,lower Cylinder Head, cataloged under National Stock Number 4320-01-084-2090, is classified within Federal Supply Class 4320 (No Item Name Available) of the Pumps and Compressors group. The primary manufacturer of record is Rps-Fl, Inc. Dba Rps Inc. This item has 4 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Catalog Facts
Item NameGland,lower Cylinder Head
FSC / FSG4320 — No Item Name Available (FSG 43)
ManufacturersCalabrese & Sons, Inc. (CAGE 07310); Circor Naval Solutions Llc Dba Warren Pumps (CAGE 63857); Rps-Fl, Inc. Dba Rps Inc (CAGE 54402)
Technical Specifications
ParameterValue
NSN4320-01-084-2090
Primary Part Number11321
Item NameGland,lower Cylinder Head
FSC / FSG4320 / 43 — No Item Name Available
ManufacturerRps-Fl, Inc. Dba Rps Inc
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
4330-00-059-7733113-21 INTERCHANGEABLE
Parts Kit,fluid Pressure Filter
Hamilton Sundstrand Corporation
2040-00-089-703611321 INTERCHANGEABLE
Disk,fiberboard
Naval Inventory Control Point Mechanicsburg
4730-00-263-31250000625 INTERCHANGEABLE
Plug,pipe
Met-Pro Corporation
3120-00-293-9927711320 INTERCHANGEABLE
Bearing,sleeve
William Spencer
5342-00-400-7607113-21 INTERCHANGEABLE
Eye,lifting
Blue Jay Manufacturing Co
4320-00-816-4152UC-18 INTERCHANGEABLE
Cylinder Sleeve
Circor Naval Solutions Llc Dba Warren Pumps
5340-00-945-1402SJ11 INTERCHANGEABLE
Retainer,helical Compression Spr
Circor Naval Solutions Llc Dba Warren Pumps
4820-00-949-7234TC-18 INTERCHANGEABLE
Seat,valve
Circor Naval Solutions Llc Dba Warren Pumps
1377-01-017-06121132-1 INTERCHANGEABLE
Cartridge,delay
Rockwell Collins Inc
3120-01-053-9868113-21 INTERCHANGEABLE
Bearing,sleeve
Jaidinger Manufacturing Co Inc Dba Jaidinger Manufacturing Co Inc
Cross-Reference Index
Part NumberManufacturer
CS 0842090 Calabrese & Sons, Inc. (USA)
BS5-2351 Circor Naval Solutions Llc Dba Warren Pumps (USA)
11321 PRIMARY Rps-Fl, Inc. Dba Rps Inc (USA)
UH-28 PRIMARY Circor Naval Solutions Llc Dba Warren Pumps (USA)
Related Parts
4330-00-059-7733INTERCHANGEABLE
PARTS KIT,FLUID PRESSURE FILTER
113-21
2040-00-089-7036INTERCHANGEABLE
DISK,FIBERBOARD
11321
4730-00-263-3125INTERCHANGEABLE
PLUG,PIPE
0000625
3120-00-293-9927INTERCHANGEABLE
BEARING,SLEEVE
711320
5342-00-400-7607INTERCHANGEABLE
EYE,LIFTING
113-21
4320-00-816-4152INTERCHANGEABLE
CYLINDER SLEEVE
UC-18
5340-00-945-1402INTERCHANGEABLE
RETAINER,HELICAL COMPRESSION SPR
SJ11
4820-00-949-7234INTERCHANGEABLE
SEAT,VALVE
TC-18
1377-01-017-0612INTERCHANGEABLE
CARTRIDGE,DELAY
1132-1
3120-01-053-9868INTERCHANGEABLE
BEARING,SLEEVE
113-21
6515-01-162-2792INTERCHANGEABLE
GLOVES,SURGEONS'
11321
4820-01-192-4548INTERCHANGEABLE
BODY,VALVE
XH-1

Frequently Asked Questions

What is NSN 4320-01-084-2090?

NSN 4320-01-084-2090 is a Gland,lower Cylinder Head, manufactured by Rps-Fl, Inc. Dba Rps Inc, classified under FSC 4320 (No Item Name Available). Status: active.

What are the part numbers for NSN 4320-01-084-2090?

NSN 4320-01-084-2090 has 4 cross-referenced part numbers: CS 0842090 (Calabrese & Sons, Inc.), BS5-2351 (Circor Naval Solutions Llc Dba Warren Pumps), 11321 (Rps-Fl, Inc. Dba Rps Inc), UH-28 (Circor Naval Solutions Llc Dba Warren Pumps).

What NSN replaces 4320-01-084-2090?

There are 12 known substitutes for 4320-01-084-2090: 4330-00-059-7733, 2040-00-089-7036, 4730-00-263-3125 and 9 more. Verify interchangeability with system specifications before substitution.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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