NM type internal expansion sealing element

1. Performance and Use

NM type internal expansion sealing element is a sealing element composed of a sealing ring, a fan-shaped supporting block and a supporting angle. It is mainly used for the pressure test of steel pipes by hydraulic testing machine. Because the NM internal expansion sealing element performs a sealing test on the steel pipe from the inner diameter of the steel pipe, the sealing ring expands outward and contacts and seals with the inner wall of the pipe during the pressure test, so the pressure test head is smaller than the D or C type, and the manufacturing cost is low. This product is suitable for hydrostatic testing of hydraulic steel pipes such as casing, tubing, and natural gas transportation.

2. Working conditions

Compliant with API 5CT/ISO11960:2011, GB/T9711.1-2011, GB/T9711.2-2011 and other oil and gas industries-oil and gas well casing or tubing steel pipes; GB8163-2008 seamless steel pipes; GB/T3092-2008 Welded steel pipes and other standard hydraulic test conditions.

Working pressure: ≤60 MPa

Working temperature: -20℃～+80℃

Working medium: water, emulsion, hydraulic oil

3. Material

Polyurethane

4. Design standards

Refer to the tolerance of GB/T3672.1-2002.

5. Examples of order marks

The specification model and order number of the sealing element are indicated, or only the order number may be indicated.

Example: Model NM198 Order No. ZN101