Spiral Wound Gasket

QS Gasket: Yuyao Spiral Wound Gasket

Spiral Wound Gasket specified from the flange drawing and bolt load.

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One-Minute Overview

Spiral Wound Gasket is matched to the flange drawing before any dimension is fixed.
Facing, bore and bolt circle are checked against the mating flanges.
Compression is set by bolt load, not by gasket thickness alone.
Full dimensions and materials are confirmed per inquiry.

Selection work for Spiral Wound Gasket starts at the flange, not at the gasket. The standard, facing and bolt circle set the available sealing area, and the winding must compress within that envelope without crushing or extruding. Qishine checks the drawing, the process medium and the bolt load before confirming the configuration per inquiry.

Name: Spiral Wound Gasket
Note: Full dimensions and bolt pattern are confirmed per inquiry.

Provide the flange standard, face finish, bolt grade and the medium the joint will carry. From those inputs the winding metal, filler and ring arrangement are selected; the bore is then checked against the pipe ID. Final dimensions, thickness and ring materials are confirmed per inquiry rather than assumed from a size label.

Inspect both faces for pitting and warping, clean away old debris and set the gasket concentric with the bore. Tighten in a cross pattern in several passes to the torque set by flange and bolt grade; an uneven pass can cock the centering ring or crush the winding. Recheck torque after the first heat-up and monitor the joint for weeping at operating pressure.

FAQ

Q1. What information is needed to specify this gasket?

The flange standard and facing, bolt circle and grade, bore, process medium and operating conditions. The winding, filler and ring arrangement are confirmed per inquiry from those details.

Q2. How is the correct compression achieved?

By bringing bolts up evenly in a star pattern to the torque set by the flange and bolt grade. The centering ring, where fitted, acts as the compression stop, so an uneven pass can overload the winding.

Q3. What causes a spiral wound joint to leak after start-up?

Scored or warped faces, a bore that does not match the pipe, uneven bolt load, or thermal cycling that relaxes the joint. Inspect the faces, confirm the bore and recheck torque after the first heat-up.

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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