Custom-Profile Seals

Specify the contact shape

A special profile may locate the seal, provide a contact lip or fit an existing groove. The essential drawing shows which faces seal, which faces retain the part and where deformation is allowed. An overall width and height alone leave these functions undefined.

• Mark sealing lips, retention feet and installation direction.
• Show radii and transitions that affect seating.
• Define whether the profile forms a closed ring or another outline.

Describe the assembled gap

Provide the minimum and maximum assembled gap and explain how the cover or housing controls compression. Request review of thin lips, parting-line position and local section changes before treating an appearance sample as an approved design.

Material and use limits

Select the compound for the actual exposure and deformation task. A profile with a similar outline is not a substitute without a fit and function assessment. Any environmental ingress or leakage requirement belongs to the complete assembly validation.

Prepare your inquiry

• Section and complete outline at the same drawing revision.
• Mating parts and tolerance stack.
• Media, cleaning exposure and operating cycle.
• Prototype acceptance criteria and expected quantity.

Buyer questions

Can a photograph define the profile?

It can show the concept, but a section drawing or a dimensioned sample assessment is needed to define the order.

Can the parting line be placed anywhere?

Mark sensitive sealing and visible surfaces so the proposed tooling layout can be reviewed before approval.

Related project families

• Custom O-Rings
• Rubber Frame Gaskets
• Silicone Cover Gaskets

Engineering reading

• How to Prepare a Rubber Part Drawing for a Useful Quotation
• Gasket Installation and Maintenance: Define the Joint Before the Torque

General references and scope

These references explain general engineering or regulatory context. They are not Xinwei finished-product specifications, test results or compliance evidence.

• Installation Guide for Garlock Premium Grade Elastomeric (Rubber) Gaskets — Pages 1–2: joint condition, alignment and controlled compression. Later torque tables apply only to the stated Garlock gasket/flange/bolt conditions and are deliberately not reproduced.