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Technical Data Sheet
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8266-19 — Technical Data Sheet

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— · ORING SEAL
WHAT YOU NEED TO KNOW
Material determines chemical compatibility Standard durometer is 70 Shore A
Wrong material = catastrophic seal failure
PRODUCT OVERVIEW

The RETAINER,PACKING is a the manufacturer industrial component. Key specifications include material: PLASTIC POLYTETRAFLUOROETHYLENE OVERALL, inner_groove_depth: 0.015 INCHES MINIMUM AND 0.027 INCHES MAXIMUM IN, inner_groove_width: 0.075 INCHES MINIMUM AND 0.100 INCHES MAXIMUM IN, peripheral_diameter: 0.929 INCHES MINIMUM AND 0.936 INCHES MAXIMUM IN, center_hole_diameter: 0.859 INCHES MINIMUM AND 0.886 INCHES MAXIMUM IN, cross-sectional_height: 0.119 INCHES MINIMUM AND 0.124 INCHES MAXIMUM IN. This part is cataloged in the Federal Logistics Information System under NSN 5330-00-580-1271, 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
8266-19
NSN: 5330-00-580-1271
FSC: 5330
CAGE: 53583 — HAWKER PACIFIC AEROSPACE (USA)
SPECIFICATIONS
materialPLASTIC POLYTETRAFLUOROETHYLENE OVERALL
inner_groove_depth0.015 INCHES MINIMUM AND 0.027 INCHES MAXIMUM IN
inner_groove_width0.075 INCHES MINIMUM AND 0.100 INCHES MAXIMUM IN
peripheral_diameter0.929 INCHES MINIMUM AND 0.936 INCHES MAXIMUM IN
center_hole_diameter0.859 INCHES MINIMUM AND 0.886 INCHES MAXIMUM IN
cross-sectional_height0.119 INCHES MINIMUM AND 0.124 INCHES MAXIMUM IN
cross-sectional_shape_styleSPECIAL
material_document_and_classificationAMS 3651 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
NSN5330-00-580-1271
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 8266-19 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
KEY FEATURES
•
CROSS-SECTIONAL SHAPE STYLE: SPECIAL
•
MATERIAL DOCUMENT AND CLASSIFICATION: AMS 3651 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
•
MATERIAL: PLASTIC POLYTETRAFLUOROETHYLENE OVERALL
•
INNER GROOVE WIDTH: 0.075 INCHES MINIMUM AND 0.100 INCHES MAXIMUM IN
•
CENTER HOLE DIAMETER: 0.859 INCHES MINIMUM AND 0.886 INCHES MAXIMUM IN
•
PERIPHERAL DIAMETER: 0.929 INCHES MINIMUM AND 0.936 INCHES MAXIMUM IN
•
CROSS-SECTIONAL HEIGHT: 0.119 INCHES MINIMUM AND 0.124 INCHES MAXIMUM IN
•
INNER GROOVE DEPTH: 0.015 INCHES MINIMUM AND 0.027 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
CROSS-SECTIONAL SHAPE STYLESPECIAL
MATERIAL DOCUMENT AND CLASSIFICATIONAMS 3651 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
MATERIALPLASTIC POLYTETRAFLUOROETHYLENE OVERALL
INNER GROOVE WIDTH0.075 INCHES MINIMUM AND 0.100 INCHES MAXIMUM IN
CENTER HOLE DIAMETER0.859 INCHES MINIMUM AND 0.886 INCHES MAXIMUM IN
PERIPHERAL DIAMETER0.929 INCHES MINIMUM AND 0.936 INCHES MAXIMUM IN
CROSS-SECTIONAL HEIGHT0.119 INCHES MINIMUM AND 0.124 INCHES MAXIMUM IN
INNER GROOVE DEPTH0.015 INCHES MINIMUM AND 0.027 INCHES MAXIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 10
8266InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
2-00045-448InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
5118958-00InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
080-90013-110InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
49949InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
01339InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLEDGOVERNMENT REGISTRY
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 8266-19?
8266-19 is a RETAINER,PACKING.
What parts can replace 8266-19?
There are 10 known substitutes for 8266-19: 8266, 2-00045-448, 5118958-00 and 7 more. Substitute compatibility should be verified for your specific system.
Is 8266-19 still available?
8266-19 is currently cancelled.
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Last verified: October 2026