Import Api Seals Type B — Buy in Bulk from Supplier in India

API Seals Type B from Expert Engineering are precision components made from Alloy C-276, a nickel-molybdenum-chromium alloy chosen for its resistance to acids, caustics and chloride-induced pitting. The Type B configuration is engineered specifically for low-temperature refinery services, where sealing integrity must be maintained in corrosive and abrasive media. The alloy’s composition typically includes 57% nickel, 16% molybdenum, 15.5% chromium and 5% iron, with trace elements controlled to enhance weldability and thermal stability.

The seal’s design focuses on durability in challenging environments, with a metal-to-metal seating arrangement that prevents leakage under cyclic thermal and pressure loads. Alloy C-276 is standard for such applications due to its ability to withstand sulfuric, hydrochloric and acetic acids, as well as alkaline solutions, at temperatures up to 1000°C. Typical industry tolerances for API seals include surface roughness Ra ≤ 0.8 µm and flatness within 0.05 mm, ensuring tight mating with flanges or housings.

These seals are used in refinery units like crude distillation, hydrocracking and sulfur recovery, where resistance to sour gas and high-pressure steam is critical. Buyers typically source them for pumps, valves and reactors in oil and gas, petrochemical and chemical processing plants. Confirm MOQ, packaging and lead time with Expert Engineering, as these are not specified in the listing but are essential for procurement planning.

Expert Engineering operates from two addresses in the Mumbai region, with offices in Mira Road (East), Dist. Thane and Goregaon West, Maharashtra. The supplier is classified under the harbor trust tier, indicating a baseline level of verification for business presence and contact details. The listed response rate is currently 0%, which may reflect a delay in updating communication metrics or a focus on direct inquiries.

The company specializes in API seals and related industrial components, with a product range that includes corrosion-resistant alloys for refinery and chemical applications. No additional certifications, client references or production capacity details are provided in the profile, so buyers should request these directly. The supplier’s location in India’s industrial hub allows for efficient logistics to major ports like Nhava Sheva.