PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

3781Seal,plain Encased

Garlock Sealing Technologies Llc Dba Garlock Sealing Technologies Llc · NSN 5330-00-154-6210 · FSC 5330 · No Item Name Available
Verified by PartsTable
NSN 5330-00-154-6210 — this item is cataloged by the U.S. Government under National Stock Number 5330-00-154-6210. Primary manufacturer part number: 3781.
Features
  • Seal,plain Encased — FSC 5330
  • Material: STEEL CASE
  • Case Style: SQUARE
  • Sealing Element Style: ANGULAR
  • Seal Width: 1.000 INCHES NOMINAL IN
  • Accommodated Shaft Maximum Rated Speed: 2000 FEET PER MINUTE FT
  • Housing Bore Diameter: 29.000 INCHES NOMINAL IN
  • Material: RUBBER SYNTHETIC SEALING ELEMENT
Applications
  • Fluid containment and leak prevention
  • Pressure boundary maintenance
  • Environmental sealing
  • Applications requiring Steel Case construction
General Description

The Seal,plain Encased, cataloged under National Stock Number 5330-00-154-6210, is classified within Federal Supply Class 5330 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Garlock Sealing Technologies Llc Dba Garlock Sealing Technologies Llc. Government technical data includes 8 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 17 commercial cross-references from 4 manufacturers, enabling identification through both NSN and commercial part number lookups. 7 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5330-00-154-6210
Primary Part Number3781
Item NameSeal,plain Encased
FSC / FSG5330 / 53 — No Item Name Available
ManufacturerGarlock Sealing Technologies Llc Dba Garlock Sealing Technologies Llc
StatusACTIVE
MaterialSTEEL CASE
Case StyleSQUARE
Sealing Element StyleANGULAR
Seal Width1.000 INCHES NOMINAL IN
Accommodated Shaft Maximum Rated Speed2000 FEET PER MINUTE FT
Housing Bore Diameter29.000 INCHES NOMINAL IN
MaterialRUBBER SYNTHETIC SEALING ELEMENT
Accommodated Shaft Diameter27.000 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 7
3110-00-227-4058 INTERCHANGEABLE
Cone and Rollers,tapered Roller
4320-00-398-63693781 INTERCHANGEABLE
Ring,lantern
Fm Af, Llc Dba American Fan Company
5915-00-816-4272327867-1 INTERCHANGEABLE
Filter,radio Frequency Interfere
Raytheon Company
6645-00-868-12466800791 INTERCHANGEABLE
Timer,sequential
Hoyt Corporation
5999-00-879-73275681-15 INTERCHANGEABLE
Clip,electrical
Cooper Bussmann, Llc Dba Cooper Industries
5310-01-182-5050HS5284LN01 INTERCHANGEABLE
Locknut,special
The Boeing Company
5340-01-225-67003781 INTERCHANGEABLE
Bumper
Rubbercraft Corporation of California, Ltd. Dba Rubbercraft Corp
Cross-Reference Index
Part NumberManufacturer
3781 PRIMARY Garlock Sealing Technologies Llc Dba Garlock Sealing Technologies Llc (USA)
N12262APC146 PRIMARY Control Flow, Inc. Dba Control Flow Inc (USA)
3781 PRIMARY Control Flow, Inc. Dba Control Flow Inc (USA)
3781SEAL PRIMARY Control Flow, Inc. Dba Control Flow Inc (USA)
3781SEAL PRIMARY Garlock Sealing Technologies Llc Dba Garlock Sealing Technologies Llc (USA)
N8352ALTAPC115 Control Flow, Inc. Dba Westech Heavy Machinery Division Div Westech Heavy Machinery Division (USA)
N16268ALTCPC146 PRIMARY Control Flow, Inc. Dba Control Flow Inc (USA)
N16268ALTCPC146 Control Flow, Inc. Dba Westech Heavy Machinery Division Div Westech Heavy Machinery Division (USA)
N8350PC146 Control Flow, Inc. Dba Westech Heavy Machinery Division Div Westech Heavy Machinery Division (USA)
A12680ITEM146 PRIMARY Control Flow, Inc. Dba Control Flow Inc (USA)
A12680ITEM146 Control Flow, Inc. Dba Westech Heavy Machinery Division Div Westech Heavy Machinery Division (USA)
3781SEAL Control Flow, Inc. Dba Westech Heavy Machinery Division Div Westech Heavy Machinery Division (USA)
3781 Control Flow, Inc. Dba Westech Heavy Machinery Division Div Westech Heavy Machinery Division (USA)
N8350PC146 PRIMARY Control Flow, Inc. Dba Control Flow Inc (USA)
N8352ALTAPC115 PRIMARY Control Flow, Inc. Dba Control Flow Inc (USA)
00044 Defense Logistics Agency Dba Defense Supply Center Philadelphia (USA)
N12262APC146 Control Flow, Inc. Dba Westech Heavy Machinery Division Div Westech Heavy Machinery Division (USA)
Related Parts
3110-00-227-4058INTERCHANGEABLE
CONE AND ROLLERS,TAPERED ROLLER
4320-00-398-6369INTERCHANGEABLE
RING,LANTERN
3781
5915-00-816-4272INTERCHANGEABLE
FILTER,RADIO FREQUENCY INTERFERE
327867-1
6645-00-868-1246INTERCHANGEABLE
TIMER,SEQUENTIAL
6800791
5999-00-879-7327INTERCHANGEABLE
CLIP,ELECTRICAL
5681-15
5310-01-182-5050INTERCHANGEABLE
LOCKNUT,SPECIAL
HS5284LN01
5340-01-225-6700INTERCHANGEABLE
BUMPER
3781

Frequently Asked Questions

What is NSN 5330-00-154-6210?

NSN 5330-00-154-6210 is a Seal,plain Encased, manufactured by Garlock Sealing Technologies Llc Dba Garlock Sealing Technologies Llc, classified under FSC 5330 (No Item Name Available). Status: active.

What are the part numbers for NSN 5330-00-154-6210?

NSN 5330-00-154-6210 has 17 cross-referenced part numbers: 3781 (Garlock Sealing Technologies Llc Dba Garlock Sealing Technologies Llc), N12262APC146 (Control Flow, Inc. Dba Control Flow Inc), 3781 (Control Flow, Inc. Dba Control Flow Inc), 3781SEAL (Control Flow, Inc. Dba Control Flow Inc), 3781SEAL (Garlock Sealing Technologies Llc Dba Garlock Sealing Technologies Llc) and 12 more.

What NSN replaces 5330-00-154-6210?

There are 7 known substitutes for 5330-00-154-6210: 3110-00-227-4058, 4320-00-398-6369, 5915-00-816-4272 and 4 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 3781?

Key specifications for 3781: Material: STEEL CASE; Case Style: SQUARE; Sealing Element Style: ANGULAR; Seal Width: 1.000 INCHES NOMINAL IN. 8 total characteristics are documented in the Federal Logistics Information System.

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