• O-Rings


O-Ring, the cutting edge is a "O" shape, which is the most common, classic, economical and useful sealing type in both dynamic and static application.
To understand a basic idea of O-Ring, it is essential you should know:

.The O-Ring dimension formula is very simple, OD = ID + 2*CS
.The popular O-Ring standards are formulated by its location and country
.The O-Ring tolerance has its limitation, when the size is out of tolerance; it means failure will cause leakage.
.O-Rings are made of elastomers which are with resilience or memory sufficient to return to its original shape after a major or minor distortion

How an O-Ring behave its sealing function:

compression-of-the-o-ring-filling-the-gap.jpg  Compression of the O-Ring-filling the gap

pressure-activation-of-the-o-ring.jpg Pressure activation of the O-Ring

. In terms of the assembly aspect, in general O-Ring can be selected in four sealing types:

male-gland-seal-.jpg female-gland-seal.jpg face-type-seal.jpg triangular-groove-seal.jpg
Male Gland Seal
Female Gland Seal
Face-Type Seal
Triangular Groove Seal

Quality and service is not ruled by a voice or written of many, it is something when you use it, and you know it.

There are thousands of O-Ring manufacturers worldwide, and it's not easy to find a suitable supplier. GMORS want to bring you another section to get far away of Red Ocean and approach Blue Ocean with us.
What value can GMORS offer?
.Various international O-Ring standards, most sizes are already tooling which you don't need to invest.
.Suitable and well known raw material suppliers to guarantee the product basic quality.
Certificated compound to meet specific markets.
Certificated laboratory to develop and identify match compound per your specification or ASTM D200 call out.
.Wide range of O-Ring hardness from 40 to 95 duro, GMORS both offer compound to meet Shore A & IRHD according to your need.
.Accurate tool house technology to create tools for high quality production
.External Lubricants & Coatings on O-Ring surface for your assembly (PTFE coating, Silicone fluid, MoS2, talcum powder, Silicone polymer based coating).
.Well O-Ring surface especially in parting line.
.Except general industry, GMORS provide strict production control in CPK/PPK in specific markets.
.Full ranges of standard O-Ring online stock which to decrease the waiting of long lead time, and best online stock system for searching and ordering for our formal customers.
.The most convenient O-Ring Master APP to help you find ideal dimension and material.

  • Full standard O-Ring series: AS 568, BS 4518, GB/T 3452.1, JIS B2401 P/G/S/V, SMS 1586 , METRIC and JASO F404.
  • Smallest 0.5mm (ID) × 0.5mm (CS)
  • Largest 1400mm (ID) × 50mm (CS)


AS 568A O-Ring Standard Size

BS 4518 O-Ring Standard Size

GB/T 3452.1 O-Ring Standard Size

JIS B 2401 O-Ring Standard Size

Metric O-Ring Standard Size

Swedish SMS 1586 O-Ring Standard Size

JASO F404 O-Ring Standard Size