Elring 255.550 O-Ring Seal ACM Polyacrylate Gaskets & Seals - 23x3mm

The Elring 255.550 is a precision-manufactured O-ring seal engineered to deliver reliable sealing performance in demanding automotive and powertrain applications. With a nominal size of 23mm inner diameter × 3mm cross-section, this O-ring is crafted from ACM (Polyacrylate rubber), a compound specifically formulated for excellent resistance to engine oil, automatic transmission fluid, and elevated operating temperatures.

Key Features:

• Dimensions: 23mm inner diameter × 3mm cross-section (23 x 3)
• Material: ACM (Polyacrylate rubber) — excellent resistance to mineral oils, ATF, and heat
• Operating Temperature Range: Suitable for high-temperature sealing environments typical of engine and transmission applications
• OEM-Quality Construction: Manufactured by Elring, a globally trusted OEM supplier to major European and world automotive manufacturers
• Precise Tolerancing: Machined to tight dimensional tolerances for consistent, leak-free sealing

Elring is a German sealing technology specialist with decades of experience supplying gaskets, O-rings, and sealing systems to OEM and aftermarket customers worldwide. The 255.550 O-ring is a direct-fit replacement suitable for use wherever a 23×3mm ACM O-ring is specified, including oil drain plug seals, banjo bolt seals, transmission line fittings, and similar fluid-sealing points.