O-Ring Kits for Industrial Maintenance and Engineering
International Seal supplies industrial O-ring kits and O-ring assortment kits for engineering, maintenance, automotive, plumbing and specialist sealing applications. Our range includes metric and imperial O-ring selection boxes, NBR, EPDM and FKM (Viton) assortments, alongside automotive, plumbing, food-grade and custom O-ring kits. As a UK supplier of engineered sealing products, we support distributors, OEMs, maintenance teams and industrial customers with standard and bespoke kit requirements.
Through our established international supply network, we can source a variety of elastomer materials, dimensional assortments and kit configurations, including repeat supply and customer-specific selections. Whether you require a standard O-ring assortment or a custom kit containing specified sizes, compounds and quantities, our team can review your requirements and provide a competitive quotation.
O-Ring Kit Range
International Seal supplies a range of standard and specialist O-ring kits designed to provide convenient access to commonly required sealing dimensions and materials.
Our assortment kits support general engineering, industrial maintenance and application-specific requirements, while custom configurations can be developed for OEMs, distributors and specialist equipment.
Metric O-ring kits contain assortments of sealing rings specified in millimetres, providing a convenient selection of common inside diameters and cross-sectional sizes.
Automotive O-ring kits provide a range of sealing assortments designed for vehicle maintenance, servicing, replacements and specialist automotive equipment.
Imperial O-ring kits contain standardised sealing sizes commonly specified in industrial machinery, fluid handling equipment and engineering applications using imperial dimensions.
Plumbing and water O-ring kits provide assortments of sealing rings for water-handling equipment, plumbing maintenance and general water-system servicing.
Custom O-ring kits are assembled to meet specific customer requirements, combining selected dimensions, elastomer compounds and quantities within a single assortment.
Food-grade O-ring kits contain selected elastomer sealing rings for food and beverage processing equipment where defined material compliance requirements apply.
What Are O-Ring Kits?
O-ring kits are organised assortments of elastomer sealing rings, typically supplied in compartmentalised boxes containing a selection of dimensions and quantities. They provide maintenance engineers, technicians and equipment manufacturers with convenient access to commonly required O-ring sizes without sourcing each dimension individually. O-ring assortment kits can be configured around a dimensional standard, elastomer material or particular equipment application.
Metric and imperial kits generally provide a range of standard sizes, while material-specific kits contain O-rings manufactured from compounds such as NBR, EPDM or FKM.
Specialist kits can also be developed for automotive servicing, water systems, food-processing equipment and other applications where particular dimensions or elastomer properties are required. The correct kit should be selected according to the equipment, material compatibility, dimensional specifications and intended operating conditions.
Selecting the Right O-Ring Assortment Kit
Selecting the correct O-ring kit depends on the required dimensions, elastomer material and intended application.
Some kits are organised around standard sizing systems, while others are configured around particular compounds or industry requirements.
| O-Ring Kit Type | Key Characteristics | Typical Applications |
|---|---|---|
| Metric O-Ring Kits | Assortments of standard metric inside diameters and cross-sections, available in selected elastomer materials. | General engineering, industrial maintenance, machinery servicing and equipment repair. |
| Imperial & AS568 O-Ring Kits | Imperial sealing assortments based on recognised dimensional standards, including AS568 dash-number sizes. | Industrial machinery, maintenance, engineering workshops and replacement sealing components. |
| Custom O-Ring Kits | Bespoke assortments containing customer-specified dimensions, elastomer compounds and quantities. | OEM production, distributor supply, maintenance departments and customer-specific equipment. |
| NBR O-Ring Kits | Nitrile rubber assortments offering good resistance to mineral oils, fuels and industrial lubricants. | Machinery maintenance, automotive servicing, industrial equipment and general engineering. |
| EPDM O-Ring Kits | Water-resistant elastomer assortments offering excellent ozone, weathering and environmental ageing resistance. | Water treatment, heating systems, outdoor equipment and industrial process applications. |
| FKM (Viton) O-Ring Kits | High-performance fluoroelastomer assortments for elevated temperatures, oils, fuels and many chemicals. | Automotive, aerospace, chemical processing and demanding industrial maintenance applications. |
| Automotive O-Ring Kits | Application-specific assortments using suitable materials such as NBR, HNBR and FKM. | Vehicle maintenance, automotive fluid systems and compatible air-conditioning equipment. |
| Plumbing & Water O-Ring Kits | Water-compatible sealing assortments, including suitable EPDM grades and other application-specific compounds. | Plumbing maintenance, water-handling equipment, heating systems and industrial water applications. |
| Food Grade O-Ring Kits | Selected food-contact compliant elastomer grades, subject to material specification and certification. | Food and beverage processing, hygienic equipment and industrial process maintenance. |
Material properties depend on the individual compound formulation, operating temperature, process media and application requirements.
Metric, imperial and custom kits describe dimensional or configuration options, while NBR, EPDM and FKM identify material-based assortments. Automotive, plumbing and food-grade kits are organised around intended applications.
Metric and Imperial O-Ring Kits
Metric and imperial O-ring kits are among the most widely used assortment formats for industrial engineering and equipment maintenance.
Metric O-Ring Sizes
Metric O-rings are specified by their nominal inside diameter and cross-section in millimetres.
A metric assortment may contain multiple sizes across a range of commonly used cross-sections, providing a convenient selection for maintenance and replacement requirements.
Imperial and AS568 Sizes
Imperial O-ring kits are commonly configured using recognised dimensional standards such as AS568.
AS568 uses dash numbers to identify standard O-ring dimensions, simplifying the selection and replacement of sealing components.
British imperial sizing references such as BS1806 may also be relevant depending on the equipment and original specification.
The individual contents and size range of an O-ring kit should be confirmed before ordering, as different assortments may contain different dimensions and quantities. For dimensional references, visit our O-Ring Size Charts.
Custom O-Ring Kits for OEMs and Distributors
Standard O-ring selection boxes may not always contain the dimensions, materials or quantities needed for a particular application. However, International Seal can review bespoke O-ring kit requirements for distributors, equipment manufacturers and industrial maintenance teams.
Depending on supplier capabilities and order requirements, custom kit specifications may include:
- Selected O-ring sizes and cross-sections
- NBR, EPDM, FKM and specialist material options
- Customer-defined quantities per size
- Application-specific assortments
- Compartmentalised storage cases
- Part identification and labelling
- Customer branding or private-label packaging
- Repeat kit configurations for ongoing supply
Custom kits can be useful for equipment manufacturers supplying maintenance packages, distributors developing their own assortment ranges and industrial customers standardising frequently used sealing components.
Material traceability, compliance documentation and packaging requirements should be discussed when the kit specification is established.
O-Ring Kit Materials
O-ring kits are available in different elastomer materials to suit the operating environment. For example, NBR is commonly selected for compatible oils and lubricants, while EPDM is used for water and weathering resistance. FKM, by comparison, offers elevated-temperature capability and resistance to many oils, fuels and chemicals. Therefore, material selection should consider the process media, temperature and any applicable compliance requirements.
Typical applications include:
NBR
NBR is commonly selected for general industrial kits due to its resistance to mineral oils, lubricants and many fuels. It provides a practical material option for machinery, automotive and maintenance applications involving compatible fluids.
EPDM
EPDM is commonly used where resistance to water, weathering, ozone and environmental ageing is required. Suitable grades may also offer resistance to hot water and steam, making EPDM relevant for water-handling and process equipment.
FKM
FKM provides elevated-temperature capability and resistance to many oils, fuels and chemical media. It is often specified for demanding applications where general-purpose elastomers do not provide sufficient chemical or thermal resistance.
Specialist Elastomers
Depending on the application, O-ring kits may also require silicone, HNBR or other specialist compounds. Silicone may be selected for temperature-sensitive applications, while HNBR is commonly used where enhanced oil resistance and mechanical durability are required.
Material compliance and operating limits must be confirmed against the specific compound.
Industrial and Application-Specific O-Ring Kits
O-ring assortments are used across a wide variety of industries, providing practical sealing components for maintenance, repair and equipment assembly.
General Engineering
Metric, imperial and NBR O-ring kits for machinery maintenance, replacement sealing components and general workshop requirements.
Automotive
NBR, HNBR and FKM assortments for vehicle servicing, automotive fluid systems and compatible air-conditioning applications.
Water & Plumbing
EPDM and suitable water-compatible elastomer kits for plumbing maintenance, heating equipment and industrial water systems.
Food & Beverage
Appropriately specified food-contact compliant O-ring assortments for process equipment, ancillary machinery and maintenance applications.
Chemical Processing
FKM and other specialist elastomer assortments for equipment handling compatible industrial chemicals and process fluids.
Aerospace & Defence
Standard and specialist O-ring assortments for maintenance and engineering applications where defined material specifications and dimensional requirements apply.
OEM & Equipment Manufacturing
Customer-specific O-ring kits assembled to support equipment production, servicing and aftermarket replacement requirements.
O-Ring Kit Sizes, Contents and Specifications
O-ring kits can vary considerably in the number of compartments, dimensions, individual O-ring quantities and total components supplied. Some assortments concentrate on commonly used dimensions, while others provide a broader selection of standard sizes. The appropriate kit configuration depends on the equipment being serviced and the range of seals likely to be required.
When requesting a quotation, the following information is useful:
- Kit type or intended application
- Metric or imperial sizing requirements
- Relevant sizing standard, where applicable
- Required elastomer material
- Shore A hardness, if specified
- O-ring dimensions or size list
- Quantity required per size
- Number of kits required
- Packaging and labelling requirements
- Compliance or certification requirements
Existing kit contents lists, part numbers, drawings and samples can also be reviewed. For custom assortments, a spreadsheet listing the required O-ring sizes and quantities is particularly helpful.
Why Choose International Seal?
International Seal supplies engineered sealing products to distributors, OEMs and industrial customers throughout the UK and Europe. Our established international sourcing network enables us to support both standard O-ring assortments and specialist customer-defined kit requirements.
Extensive Kit Range
Metric, imperial, NBR, EPDM, FKM and application-specific O-ring kits for industrial maintenance and engineering.
Custom Kit Configurations
Support for bespoke selections containing specified dimensions, compounds and quantities.
Competitive Supply
Established international supplier relationships supporting competitive quotations for standard and specialist O-ring kits.
Technical Support
Assistance reviewing O-ring dimensions, material selection, operating conditions and kit specifications.
O-Ring Kits FAQs
What types of O-ring kits does International Seal supply?
International Seal supplies metric, imperial, custom, NBR, EPDM, FKM, automotive, plumbing and food-grade O-ring kits, subject to the required configuration and material availability.
What is the difference between metric and imperial O-ring kits?
Metric O-ring kits contain dimensions specified in millimetres, while imperial assortments typically contain sizes associated with imperial dimensional standards such as AS568.
What is an AS568 O-ring kit?
An AS568 O-ring kit contains an assortment of O-ring dimensions identified using the AS568 standard dash-number sizing system.
Which O-ring kit is suitable for general industrial maintenance?
NBR metric or imperial O-ring kits are commonly used for general machinery and industrial maintenance where the seals are exposed to compatible oils and lubricants. The appropriate material should be confirmed against the application.
What is the difference between NBR and Viton O-ring kits?
NBR kits contain nitrile rubber seals typically used for oil-resistant industrial applications. FKM kits, often called Viton O-ring kits, provide greater temperature capability and resistance to many oils, fuels and chemicals.
Can you supply custom O-ring kits?
Yes. International Seal can review custom kits containing specified O-ring dimensions, materials and quantities, including customer-specific assortment and packaging requirements.
Are automotive O-ring kits available in different materials?
Yes. Depending on the application, automotive O-ring kits may incorporate NBR, HNBR, FKM or other suitable compounds. Material selection must be matched to the relevant fluids, temperatures and operating conditions.
Which O-ring kits are suitable for plumbing?
EPDM and other suitable water-compatible elastomers are commonly used in plumbing and water-system applications. Potable-water compliance must be confirmed for the specific compound where required.
Can you supply food-grade O-ring kits?
Food-contact compliant O-ring assortments can be reviewed using suitable elastomer grades. The applicable compliance requirements and supporting documentation must be confirmed for each compound.
Can custom O-ring kits include different materials?
Yes. Bespoke assortments can be specified to include different elastomer materials, dimensions and quantities, subject to availability and clear material identification.
Need an O-Ring Kit Quote?
International Seal supplies industrial O-ring kits and O-ring assortment kits for engineering, maintenance, automotive, plumbing and specialist applications.Our range covers metric and imperial selections, NBR, EPDM and FKM assortments, alongside custom and application-specific kit requirements.
Whether you require a standard O-ring selection box, specialist material assortment or bespoke kits for distributor and OEM supply, our team can review your requirements.Send us your preferred kit type, material, sizes and required quantity. Existing kit references and customer-defined contents lists can also be reviewed.