We Supply Large
Custom O-rings

No Minimum Quantity
No Dimension Limits *
No Molding Costs
* Minimum Inside Diameter 200 mm
Get a quote
Name
E-mail
Phone
Company
Internal Diameter dimensions (mm)
Remember: Internal diameter must be at least 200mm
Cord cross section (mm)
Select the material
Total quantity
Required delivery date
The O-Ring Store produces and supplies large dimension and high-performance O-Rings from 200 mm to endless internal diameter. We offer a variety of elastomer materials with the highest performance to fit all of your needs.

The production method of our large O-rings is based on a very innovative way of compression moulding or "step-moulding" technology. This technology is a traditional compression-moulding system but uses tools and machines specifically designed, built and tested for this purpose.

With this method, elastomer materials are moulded with different dimensions by the cross-section and the internal diameter, with endless possibilities in combinations.
It enables us to supply O-Rings with large, non-standard dimensions with the same mechanical characteristics as those with standard sizes.

Customers that need O-rings of particular dimensions, in small quantities or even just one piece, can take advantage of this system because with the "unlimited tools in one" approach, we can supply every possible dimension without charging for the mould building.

The benefits are seen in the finished product, where quality guarantees on all products tolerances. On all our products, we apply dimensionally and surface imperfection tolerances according to ISO 3601-1 and 3601-3.

Custom large size O-Rings according to your specifications

dimensions
according to ISO 3601-1
surface
according to ISO 3601-3 grade N and S
special
dedicated tools and procedure for high-vacuum applications
More than 70 different materials.
Download our new material catalogue now

To summarize the advantages of our O-Rings, you have

No Internal Diameter dimensional limits. From 200 mm up to infinity.
No moulding costs to a customer.
No minimum purchase. You can order as low as one piece.
Mechanical performances are comparable to traditional O-Rings made by compression and injection moulding.
Competitive prices
Fast deliveries to your site. A customer receives the ordered pieces in a few days.
200.00 mm
minimum inside diameter
∞ mm
maximum inside diameter
one piece
no minimum orderable quantity

How do we look compared to other production methods?

Cold jointed o-ring (clued joint)
Hot jointed o-ring (clued joint)
Hot jointed o-ring with material addition
O-ring from injection or compression moulding
O-ring from The O-Ring Store
+
-
Very easy and cheap process with no specific tools needed.
Materials easily and rapidly procurable.
Decent Tensile Strength.
Bad compression and flexible resistance (joint easily breakable).
Variable joint quality.
Ageing, deterioration and hardening of the glue and risk of joint breakage.
Cold jointed o-ring (clued joint)
+
Easy and cheap process.
Better mechanical features of the joint than cold glued ones.
No glue hardening.
+
Quite cheap process. Same material for both cord and joint.
No joint hardening.
Decent mechanical features of the joint.
+
Great Tensile Strenght, Elongation and Compression Set.
No chemical resistance limits.
High quality repeatibility.
+
Very easy and cheap process with no specific tools needed.
Materials easily and rapidly procurable.
Decent Tensile Strength.
-
Low flexible resistance of the joint.
Variable joint quality.
Easy to burn cord extremities.
Low chemical resistance of the glue.
-
Varible joint quality.
-
With some materials a darker stripe could be seen around the surface (jointing point of the material into the mould groove).
-
With some materials a darker stripe could be seen around the surface (jointing point of the material into the mould groove).
Hot jointed o-ring with material addition
Hot jointed o-ring (clued joint)
O-ring from injection or compression moulding
O-ring from TME SEALS AUSTRALIA

Product features

On all our products, we apply dimensional and surface imperfection tolerances according to ISO 3601-1 and 3601-3 (grade N and S)
Cross section
Materials
NBR
black
from 50 to 90 ShA
FDA | Low temp.
HNBR
black
from 60 to 98 ShA
AED
EPDM
black
from 60 to 80 ShA
FDA
FKM
black, green, red, blue, brown
from 60 to 98 ShA
AED | Low temp. | FDA
FFKM
black
from 75 to 90 ShA
Low temp. | High temp.
EPDM PX
black
from 60 to 70 ShA
FDA | 3-A | USP
CR
black
from 60 to 70 ShA
FEMP
black
from 70 to 90 ShA
Aflas®
VMQ
red
from 60 to 70 ShA
FDA
Two main characteristics limit us: cross-sections from 2.62 to 60.00 mm and a minimum internal diameter of 200.00 mm

Fast shipping Australia wide

We deliver your O-rings at your site at our standard time. We also offer express shipping in case you need your O-rings fast!
*All products are made in Italy according to The O-Ring Store requirements
© The O-ring Store ABN 69261542752
This website uses cookies. We use cookies to personalise content and ads, to provide social media features and to analyse our traffic. We also share information about your use of our site with our social media, advertising and analytics partners who may combine it with other information that you’ve provided to them or that they’ve collected from your use of their services.
Ок