O rings

O Ring

Standard O Rings

MECH Rubber offers the seal industry’s largest inventory of O-rings including every standard AS-568B size, including I.D.’s from 1/32″ (.794mm) to 26″ (66.04cm), O.D.’s from 3/32″ (2.38mm) to 26-1/2″ (67.31cm) and cross sections (widths) from 1/32″ (.794mm) to 1/4″ (6.35mm). We also carry a wide variety of metrics and non-standard sizes. Most likely the size and compound you require is in our stock of over 300,000,000 O-rings. Our O-ring inventory is constantly restocked to assure immediate delivery of any size in large or small quantities. We are the largest rubber manufacturers in India.

Simplified Reference Easy to Order:

Our Quick Reference Guide has all the information you need at a glance. All rubber O rings sizes are listed by ascending inside diameter (I.D.) in fractional AND decimal sizes. Standard AS-568B Uniform Numbering System (Order by a single number).

Choice of Seven Materials as Standard:

We offer O rings rubber compounds and options of Durometer hardness to satisfy practically any service condition. Check with our sales staff for other material needs.

Quickest Delivery on O-Rings:

We have stock of about 300,000,000 O-rings. Immediate shipments with no intermediate delays. (Remember – with MECH Rubber you buy direct.)

We highly recommend that in all cases, samples of a specific size and compound should be tested in the application before use in production.

General Applications

O-Rings from MECH Rubber are available in a choice of seven basic materials each in a range of optional Durometer (Shore A) Hardnesses. Other materials available upon request.

Buna-N:

In the Buna-N family, you will find compounds which are ideally suited for oil resistant applications of all types.

Ethylene-Propylene:

In the Ethylene-Propylene family, you will find compounds that are used extensively for outdoor, weather resistant uses, water appliances. The first choice for low torque drive belts.

Silicone:

In the Cast Polyurethane family, you will find compounds which are used predominantly in high hydraulic pressure applications and situations where highly stressed parts are subject to wear.

Cast Polyurethane:

In the Cast Polyurethane family, you will find compounds which are used predominantly in high hydraulic pressure applications and situations where highly stressed parts are subject to wear.

NeopreneĀ®:

In the Neoprene family, you will find compounds which are the superior sealing materials for the refrigeration industry featuring resistance to ammonia and FreonĀ®.

Fluorocarbon:

In the Fluorocarbon family, you will find compounds which make-up the preferred seals for aircraft engines, automotive fuel handling systems and hard vacuum

Fluorosilicone:

In the Fluorosilicone family, you will find compounds which make-up seals that are unparalleled for aerospace fuel systems and auto fuel emission control systems. All materials are compounded under stringent quality control for uniformity of physical properties, and to meet or exceed Government, Military, Space Program, Automotive, F.D.A., Industrial and Commercial specifications.

Metric Size Range

A wide range of Standard British, Swedish and German Metric ‘O’ Rings India are available in cross sections from 1.5 to 8.4 millimeters and inside diameters from 3 to 395 millimeters.

Cross Section Inside Diameter Range
1.5 mm 3.0 mm to 95.0 mm
1.6 mm 3.1 mm to 37.1 mm
2.0 mm 3.0 mm to 96.0 mm
2.4 mm 3.3 mm to 69.6 mm
2.5 mm 4.0 mm to 136.0 mm
3.0 mm 5.0 mm to 237.0 mm
3.5 mm 8.0 mm to 282.0 mm
4.0 mm 9.0 mm to 314.0 mm
5.0 mm 15.0 mm to 395.0 mm
5.7 mm 35.2 mm to 149.3 mm
8.4 mm 144.1 mm to 149.1 mm

Member Testimonials

ONGC – Oil and Natural Gas Corporation Limited

"ONGC - Oil and Natural Gas Corporation Limited" - Our complex drilling application where Shaft was eccentric and application was robust & muddy. Replacement was never easy. Mech Spares designed Oil seals resolved difficulty. This gave a complete joy to my maintenance team.
2014-06-08T07:48:57+00:00
“ONGC – Oil and Natural Gas Corporation Limited” – Our complex drilling application where Shaft was eccentric and application was robust & muddy. Replacement was never easy. Mech Spares designed Oil seals resolved difficulty. This gave a complete joy to my maintenance team.

Kuwait National Petroleum Company

"Mr Mohammed Al Duaigy" of (Kuwait National Petroleum Company) : We tried several diaphragms from renown worldwide Rubber manufacturing companies. We found Mech Spares technical know how and product to be of great durability and lasted 3 times more then anticipated. They have accurate understanding of there products.
2014-06-08T07:49:23+00:00
“Mr Mohammed Al Duaigy” of (Kuwait National Petroleum Company) : We tried several diaphragms from renown worldwide Rubber manufacturing companies. We found Mech Spares technical know how and product to be of great durability and lasted 3 times more then anticipated. They have accurate understanding of there products.

McCafferty BM Design Ltd, KENT United Kingdom

"McCafferty BM Design Ltd, KENT United Kingdom" - Most of the O rings manufacturing company suggested to use larger diameter and expensive elastomers. We learnt with Mech Spares that elastomer being weaker compare to metal and alloys and needs appropriate back up for high pressure or high vacuum applications. Further not necessary the most expensive elastomer is the best for all applications. We trust Mr Nilesh chodhari completely for all our O rings designing applications.
2014-06-08T07:50:26+00:00
“McCafferty BM Design Ltd, KENT United Kingdom” – Most of the O rings manufacturing company suggested to use larger diameter and expensive elastomers. We learnt with Mech Spares that elastomer being weaker compare to metal and alloys and needs appropriate back up for high pressure or high vacuum applications. Further not necessary the most expensive View Full →

Bhabha Atomic Research Centre ( BARC )

"Dr. A. Singh" of BARC: The electric Insulation mat manufactured by MECH SPARES as per IS 15624 tested at ERTL and found to withstand 40 Kv and still didn't tear. We have been using since 5 years and still didn't generate any fatigue. They arranged bulk delivery in short period.
2014-06-08T07:16:20+00:00
“Dr. A. Singh” of BARC: The electric Insulation mat manufactured by MECH SPARES as per IS 15624 tested at ERTL and found to withstand 40 Kv and still didn’t tear. We have been using since 5 years and still didn’t generate any fatigue. They arranged bulk delivery in short period.

Tata Steel

"Tata Steel" - One of our old machines started making loud noise and disturbed the entire village. We were compelled to stop the machines which lead to huge production loss. With the help of Mech Spares designed bellows in two part we could retain the lubrication and eliminate the noise.
2014-06-08T07:17:16+00:00
“Tata Steel” – One of our old machines started making loud noise and disturbed the entire village. We were compelled to stop the machines which lead to huge production loss. With the help of Mech Spares designed bellows in two part we could retain the lubrication and eliminate the noise.
View O Ring Reference Chart