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Technical Data Sheet
PartsTable / MRO / 1820-20
1820-20 ✓ Verified by PartsTable
— · MRO · MRO_GENERAL
WHAT YOU NEED TO KNOW
Material determines chemical compatibility Standard durometer is 70 Shore A
Wrong material = catastrophic seal failure
PRODUCT OVERVIEW

The BAR,PULL,TELETYPEWRITER is a the manufacturer industrial component. Key specifications include material: RUBBER SYNTHETIC SEALING ELEMENT, case_style: SQUARE, seal_width: 0.506 INCHES NOMINAL IN, housing_bore_diameter: 1.375 INCHES NOMINAL IN, sealing_element_style: VERTICAL, accommodated_shaft_diameter: 0.875 INCHES NOMINAL IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-291-3307, indicating validated use in U.S.

government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels. Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
MRO→ MRO_GENERAL→ 1820-20
NSN: 5330-00-291-3307
FSC: 5330
CAGE: 81168 — STROHMEYER, JULIE A. DBA JULIE A. STROHMEYER (USA)
SPECIFICATIONS
materialRUBBER SYNTHETIC SEALING ELEMENT
case_styleSQUARE
seal_width0.506 INCHES NOMINAL IN
housing_bore_diameter1.375 INCHES NOMINAL IN
sealing_element_styleVERTICAL
accommodated_shaft_diameter0.875 INCHES NOMINAL IN
NSN5330-00-291-3307
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 1820-20 MFR: OEM ⚠ VERIFY BEFORE ORDERING Wrong material = failure. Viton for oil/fuel, EPDM for water/steam, Buna-N for general purpose, Silicone for food-grade. Chemical incompatibility causes swelling, brittleness, or rapid degradation ✓ BROKER TIP Durometer (hardness) affects sealing pressure tolerance. Higher Shore A = harder = higher pressure. Standard durometer is 70A — verify if application requires different hardness PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
VERIFIED SUBSTITUTES & CROSS-REFERENCES 25
163-78Interchangeable
interchangeable cross-reference
interchangeable
H260K203Interchangeable
interchangeable cross-reference
interchangeable
10433Interchangeable
interchangeable cross-reference
interchangeable
182020Interchangeable
interchangeable cross-reference
interchangeable
WO-182020Interchangeable
interchangeable cross-reference
interchangeable
182020AInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 1820-20?
1820-20 is a BAR,PULL,TELETYPEWRITER. It is classified as a MRO (MRO_GENERAL).
What parts can replace 1820-20?
There are 25 known substitutes for 1820-20: 163-78, H260K203, 10433 and 22 more. Substitute compatibility should be verified for your specific system.
Is 1820-20 still available?
1820-20 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026