Lepu Seal - A Professional China Mechanical Seal Manufacturer providing Cartridge Seal, Grundfos Mechanical Seal And We offer free sample!

mark@lepuseal.com+86 18903009893

Penetrant testing on a customer-drawing custom metal-insert graphite ring. No leakage, no permeation detected — every unit passed.

Name: Penetrant testing on a customer-drawing custom metal-insert graphite ring. No leakage, no permeation detected — every unit passed.
Uploaded: 2026-08-18T17:30:48+08:00
Duration: 28 s
Description: We made this one to a customer's drawing, so the geometry, dimensions, and the way the metal core sits inside the graphite body are all built to their spec. Before it ships, every ring goes through the penetrant test on the bench — sprayed, dwe

2026-08-18

Penetrant testing on a customer-drawing custom metal-insert graphite ring — an OEM replacement mechanical seal component built to order. No leakage, no permeation detected — every unit passed.

We made this one to a customer's drawing... — the same discipline behind our mechanical seal replacement parts and OEM pump mechanical seals. ...This batch came back clean: no cracks, no seepage...

In mechanical seals for rotating equipment, a graphite ring that fails at the metal-graphite interface takes the whole mechanical pump shaft seal down with it — which is why we test every part, not a sample. This is the test.

If you have more questions, write to us

Just leave your email or phone number in the contact form so we can send you a free quote for our wide range of designs!

Recommended

Guangzhou Lepu Machinery Co., Ltd.

Add:

No. 5, Yunkai Road, Huangpu District, Guangzhou, China

Tel:

+86-020-36158139
+86-020-36158280

E-mail:
mark@lepuseal.com

Fax: +86-020-36158281

Contact Person: Mr. Mark Ao
Whatapps: +86-18903009893

Quick Link

Products

As a professional mechanical seal manufacturer, Lepu Seals is committed to providing complete mechanical seal solutions. We offer a wide range of sealing solutions for pumps in a variety of applications, including wastewater treatment, oil and gas, power generation, chemical, and other industries. We have provided mechanical seals to over 1,000 customers, with over 150 of them enjoying long-term partnerships. As the most widely used seal in the industry, our warehouse always has a sufficient supply of John Crane mechanical seals, and our capabilities ensure fast delivery.