Gaskets & O-Rings
How to choose gaskets & o-rings
Sub-type and use case
Pick Plumbing sub-types for water systems, but choose Hardware seals for doors or generic fittings. Plumbing Fittings & Supports cover the brackets and backs.
Material versus temperature
Match material to temperature. Silicone and FKM handle heat, while standard rubber or plastic cracks in a hot feed.
Pack volume
Decide on pack size first. A 100 piece NBR batch suits a van, but a small white silicone multipack suits a home drawer.
Colour coding
Colour matters if you service multiple systems. Red or blue rings let you flag gas versus water at a glance.
Shore hardness
Shore hardness drives the fit. 70 Shore A flexes into old threads, while 80 Shore A holds form in precision assemblies.
What's good
- Buying by material tier lets you match the seal to the fluid. NBR rubber handles oils, while EPDM and silicone suit water feeds.
- Bulk packs of 100 small O-rings suit tradespeople stocking a van. A pack of 4 multiple sizes fits a one off plumbing repair.
- Stainless steel and copper washers (listed under Hardware and Plumbing Fittings) resist corrosion better than plastic in damp UK installs.
- Colour coded options (red, blue, green, black/green) help you spot the right ring in a mixed kit.
Things to watch
- Soft silicone and rubber seals can deform under high pressure. They are wrong for rigid steel fitting joints that need metal or steel/rubber builds.
- Small NBR O-rings in 70 Shore A are easy to stock but harder to seat than a pre formed wax or copper gasket for plumbing.
- Mixed size packs save drawer space yet leave you short if you need a specific 35mm diameter ring.
- FKM in 80 Shore A resists heat but takes more room in a basic kit than standard black rubber.
Care & maintenance
Protect soft seals
Keep spare rubber and silicone O-rings out of direct sunlight to stop the material hardening.
Dry metal washers
Wipe steel and stainless steel washers dry after a plumbing job to avoid surface staining.
Flat wax storage
Store wax rings flat in a cool cupboard so they keep their shape before fitting.
Inspect metal reuse
Check copper and metal seals for pitting before reuse, as they do not spring back like rubber.
Frequently Asked Questions
What should I look for when buying gaskets & o-rings?
When shopping for gaskets & o-rings, consider factors such as quality, price, brand reputation, and customer reviews. Compare prices across multiple retailers to ensure you're getting the best deal. Look for products that match your specific needs and budget.
How do I choose the right gaskets & o-rings?
Choosing the right gaskets & o-rings depends on your individual needs, budget, and preferences. Research different options, read customer reviews, and compare specifications. Consider what features are most important to you and look for products that offer the best value for money.
Where can I find the best deals on gaskets & o-rings?
You can find the best deals on gaskets & o-rings by comparing prices across multiple retailers. Our price comparison tool helps you find the lowest prices from trusted UK retailers including Amazon, eBay, and other major online stores. Check regularly as prices and deals change frequently.
Are gaskets & o-rings products worth the investment?
The value of gaskets & o-rings products depends on your specific needs and how you plan to use them. Quality products from reputable brands often provide better long-term value, even if they cost more initially. Consider your budget and requirements when making your decision.
What's the difference between different types of gaskets & o-rings?
Different types of gaskets & o-rings vary in features, quality, price, and intended use. Some may offer premium features while others focus on affordability. Research the specific differences between models or brands to find the option that best suits your needs and budget.
