API 6A Blind Flange – 1-13/16" 10M (10,000 PSI)

The 1-13/16" 10M (10,000 PSI) API 6A Blind Flange is a massive, high-integrity forged steel component engineered to completely seal off the ends of extreme-pressure wellheads, choke manifolds, and surface treating lines. Rated for an immense 10,000 PSI working pressure, this specialized API 6A blind flange provides a permanent or temporary impenetrable barrier, ensuring absolute fluid containment and preventing hazardous blowouts during system isolation, rigorous pressure testing, or when capping off unused manifold ports.

Unlike standard ANSI industrial flanges, API 6A flanges are specifically purpose-built for the extreme stresses of upstream oil and gas extraction and well control. Because a blind flange is a solid, unbored disc, it must bear the full force of the internal line pressure. To safely manage this, the flange features a precision-machined Ring-Type Joint (RTJ) groove designed specifically to seat a BX-style (typically BX-151) steel ring gasket. When the heavy-duty studs are torqued down, the ring gasket is compressed into the groove, creating an incredibly tight, metal-to-metal seal that actually improves as internal pressure increases.

Manufactured from premium forged alloy steel, this 1-13/16" 10M blind flange strictly conforms to all API Specification 6A metallurgical, dimensional, and performance standards, ensuring seamless compatibility with standard high-pressure wellhead and frac tree equipment.

Features & Benefits

• 10,000 PSI API 6A Rating: Engineered specifically for extreme upstream environments, safely containing severe working pressures up to 10,000 PSI (10M).

• Ring-Type Joint (RTJ) Seal: Features a precision-machined ring groove for a BX ring gasket, creating a fail-safe metal-to-metal seal that prevents leaks under immense pressure.

• Solid Forged Construction: Manufactured from high-strength forged steel to provide superior resistance against wellhead vibration, mechanical shock, and cyclic pressure fatigue.

• System Isolation & Testing: The perfect fail-safe solution for blanking off pipeline terminuses, securely isolating wellhead valves, and sealing systems for rigorous hydrostatic testing.

• API 6A Compliant: Machined to strict American Petroleum Institute (API) tolerances to guarantee a perfect face-to-face fit with standard mating wellhead equipment.

Specifications & Technical Details

Applications

This 1-13/16" 10M API 6A blind flange is a mandatory isolation and safety component for extreme-pressure upstream surface operations. Typical applications include terminating high-pressure oil and gas flowlines, capping off unused ports on choke and kill manifolds, securely isolating wellhead gate valves during maintenance, and sealing frac tree components for high-pressure hydrostatic testing.

Quality Assurance

All our API 6A flanges are manufactured from premium forged steel and subjected to strict quality control processes. Each blind flange undergoes rigorous dimensional inspection, precision ring groove machining verification, and non-destructive testing (NDT) to ensure absolute structural integrity and defect-free sealing surfaces. Full material test reports (MTRs) are available upon request to guarantee full compliance with API industry standards.

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