AFA Industries SealO-Ring 1662903 - 1662903

Afa Industries AFA Industries SealO-Ring 1662903 Part No: 1662903

$1.97

The AFA Industries 1662903 Seal O‑Ring is a high-temperature FKM (Viton 90) seal for Cat injector tubes on 3406E, C15, and C16 engines. Made from Viton 90 FKM, it resists high heat, petroleum oils, diester and phosphate ester fluids. Measuring approx. 34.59 mm ID and 2.62 mm cross-section (SAE dash 126), it ensures leak-free reliability in heavy-duty Cat 3406E, C15, and C16 engines.

Specifications

The AFA Industries 1662903 Seal O‑Ring is a Caterpillar OEM-compatible seal designed for injector tube and high pressure oil or fuel interfaces in Cat 3406E, C15, and C16 engine families. Built from FKM (Viton 90) compound, this O‑ring offers excellent resistance to hydraulic, diesel fuel, petroleum oils, diester lubricants, and phosphate ester fluids, and operates within a temperature range of -40 °C to 175 °C (‑40 °F to 350 °F). With a 34.59 mm inside diameter (~1.36 in) and a 2.62 mm cross-section (~0.10 in, SAE dash size 126), it is engineered to tight tolerances for static sealing applications, preventing leaks in fuel injection and common rail assemblies. Lightweight (~0.01 lb) and durable, this seal supports long service life in industrial and truck engine rebuilds and maintenance routines for Caterpillar power units.

Weight

0.01

Compatibility

Caterpillar 3406E, C15, C16 injector tube seal applications (mid‑1990s to 2000s).

Caterpillar articulated dump trucks (Models: 735, 740, D350E II, D400E II, MT835, MT845, MT855, MT865).

Cat Challenger agricultural tractors (MT series) using C15/C16 engines.