Resource

NIYOK combines expert sealing engineering, 40 years of manufacturing experience, and advanced production equipment to deliver comprehensive sealing solutions for customers worldwide.

Resource

Whether you are evaluating material specifications, conducting supplier audits, or planning a sealing solution, NIYOK provides a comprehensive library of technical documentation — including product specification sheets, material performance data, and application white papers — to support your engineering and procurement teams in making well-informed decisions.


Rubber Material Operating Temperature Comparison Chart

When operating temperatures exceed a material's rated range, your seal becomes a ticking time bomb.

Material Oil & Heat Resistance Comparison Chart

High temperature or oil resistance — prioritize the wrong property, and your seal will fail in exactly the right environment.

Rubber Material Properties Comparison Chart

Choosing materials by gut feel means paying for future failures.

Common Rubber Material Specifications & Characteristics

Wrong rubber material choice leading to premature seal failure? One chart gives you the answer.

Can't find a specification that fits your requirements? Contact NIYOK for a customized sealing solution.

NIYOK Resource Introduction

Based in Taiwan, NIYOK SEALING PARTS CO., LTD. is a seal and rubber products supplier and manufacturer in the Seal Industry.

NIYOK brings 40 years of seal manufacturing expertise, certified to ISO 9001 and IATF 16949, with full quality traceability ensuring consistent batch-to-batch delivery. In 2026, we expanded into the electric vehicle (EV) and semiconductor sectors, offering customized sealing solutions from design through mass production, powered by in-house engineering capabilities. Your trusted precision sealing partner. Inquiries welcome. From oil seals, O-rings, to gaskets, and customized products, application industries include manufacturing, chemical processing, defense, water treatment and filtration, hydraulics, fluid power, heavy trucks, automobiles, aerospace, oil and gas, medical and For life sciences, food and beverages, a complete product line is available for customer needs and specifications.

NIYOK has been offering customers high-quality Oil Seal, Seal, Rubber Parts, Gasket, O-Ring, Custom-slit-valve since 1983, both with advanced technology and 40 years of experience, NIYOK ensures each customer's demands are met.