Real World Quality

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We Are Providers of Seals and Sealing Systems

Real World Quality

Stringent quality controls from design through manufacturing let Stein Seal meet and surpass the most rigorous industry standards and our customers’ expectations. Our own quality standards for dimensions, tolerances and finishes ensure that our seals operate at pressures, speeds, and elevated temperatures with minimal leakage and low rubbing wear. This is especially important in compressor and pipeline applications as well as high-performance aircraft engine applications.

Quality Policy

It is the policy of the Organization to offer products and services that fill a wide range of customer needs, pursue and deserve a reputation for quality leadership, and earn customer trust through conformance to specifications and continuous improvement.

Our Quality certifications include:
  • ISO 9001:2015
  • AS 9100D
  • National Aerospace and Defense Contractors Accreditation for Welding (NADCAP-Welding)
  • Self-Release Supplier (aerospace)
  • Certified to perform our own audits
Manufacturing quality processes:
  • Six Sigma
  • Statistical Process Industry
  • Design for Manufacturability
  • Failure Modes Effects and Criticality Analysis (FMECA)

FAA Repair Station


+1 215-256-0201

Business Hours:

8:30am-6:00p M-F


1500 Industrial Boulevard | KulpsvillePA 19443-0316


+1 215-256-0201

Stein Seal Company
P.O. Box 316
1500 Industrial Blvd.
Kulpsville, PA 19443-0316 U.S.A.