C4400 Insulating Spacer

QS Gasket: Xiamen C4400 Insulating Spacer

C4400 Insulating Spacer to ASME B16.5 150LB, supplied with G10 sleeves, washers and ZPS.

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One-Minute Overview

C4400 Insulating Spacer is specified for ASME B16.5 150LB flanges.
A Klingersil C4400 element and G10 sleeves and washers with ZPS form the complete insulating stack.
The 8 Inch format matches the listed flange bore and bolt circle.
Final dimensions and the flange drawing are confirmed per inquiry.

Selecting an isolation kit starts with the flange standard, not the product name. C4400 Insulating Spacer is listed for ASME B16.5 flanges at 150LB, built on Klingersil C4400 with G10 sleeves, washers and ZPS and sized for 8 Inch. Qishine specifies the assembly as a matched set so the sealing and insulating functions share one part number.

Name: C4400 Insulating Spacer
Material: Klingersil C4400
Compound: aramid fibre with a nitrile binder
Standard: ASME B16.5
Size: 8 Inch
Pressure: 150LB
Complete with: G10 sleeves and washers with ZPS
Note: Full dimensions and bolt pattern are confirmed per inquiry.

Fix the ASME B16.5 standard and 150LB class, then the facing and bolt size. Only then choose the Klingersil C4400 grade and the 8 Inch bore. Confirm that the gasket configuration matches the flange drawing and that the G10 sleeves and washers with ZPS stack height is compatible with the available grip length.

Dry-fit the stack before final assembly to check bore clearance and sleeve length. Clean the faces, tighten in a cross pattern to the specified torque, and record the as-built stack height. After the first heat-up, recheck torque and verify electrical discontinuity across the joint.

FAQ

Q1. Which standard does this kit follow?

It is listed for ASME B16.5 flanges in the 150LB class. The exact facing, bolt grade and bore are confirmed per inquiry against the flange drawing before the 8 Inch gasket is cut.

Q2. What determines the correct 8 Inch gasket size?

The nominal pipe size, the ASME B16.5 flange bore and the bolt circle. The gasket must seal the facing without protruding into the flow path, so the drawing is checked before cutting.

Q3. Can the insulating parts be ordered separately?

G10 sleeves and washers with ZPS are supplied as a matched set with the Klingersil C4400 element to keep stack height and dielectric strength consistent. Separate items and exact dimensions are confirmed per inquiry.

Q4. What payment terms do you accept?

T/T, L/C at sight and other internationally accepted terms. The exact terms are agreed with you before production starts, because the payment schedule has to match the order value, the shipping method and the delivery schedule you need — which is also why we confirm them up front rather than after shipment.

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