Beyond the Seal

O-ring cord coil arranged under the orange and black Selo logo on a white background.

O-Ring Cord: Build Custom Seals for Any Applica...

Matthew Jones

O-ring cord lets you make custom-sized seals for any application. Selo now offers metric and imperial NBR 70 Shore cord by the metre, with more materials on the way.

O-Ring Cord: Build Custom Seals for Any Applica...

Matthew Jones

O-ring cord lets you make custom-sized seals for any application. Selo now offers metric and imperial NBR 70 Shore cord by the metre, with more materials on the way.

Two Woodruff keys, one flat and one standing on edge, displayed on a white background beside a metric ruler for scale, with the orange and black Selo logo beneath.

How to Identify and Measure a Woodruff Key

Matthew Jones

Not sure which Woodruff key you need? Learn how to identify and measure them correctly — including the difference between metric and imperial sizes.

How to Identify and Measure a Woodruff Key

Matthew Jones

Not sure which Woodruff key you need? Learn how to identify and measure them correctly — including the difference between metric and imperial sizes.

Red silicone O-ring for clean, high-temperature sealing in coffee machines, engines, and general applications — flexible metric seal by Seal With Selo.

Red Silicone O-Rings: Heat, Flexibility, and Cl...

Matthew Jones

Red silicone O-rings combine heat resistance, flexibility, and clean performance. Commonly used in coffee machines, brewing systems, and other sealing applications.

Red Silicone O-Rings: Heat, Flexibility, and Cl...

Matthew Jones

Red silicone O-rings combine heat resistance, flexibility, and clean performance. Commonly used in coffee machines, brewing systems, and other sealing applications.

Six copper washers of varying sizes evenly arranged around the orange and black Selo logo on a white background, showing the range of metric copper washers available.

Why Copper Washers Are Still the Go-To Seal for...

Matthew Jones

Copper washers might be small, but they’re still one of the most reliable seals for engines, brake lines, and hydraulic systems. Here’s why mechanics still trust them.

Why Copper Washers Are Still the Go-To Seal for...

Matthew Jones

Copper washers might be small, but they’re still one of the most reliable seals for engines, brake lines, and hydraulic systems. Here’s why mechanics still trust them.

Comparison diagram showing the cross-section of an O-ring (solid black circle) and an X-ring (quad ring with four-lobed profile), with the Selo logo beneath.

X-Rings (Quad Rings): What They Are and Why The...

Matthew Jones

X-rings, also called quad rings, offer better sealing, less friction, and more stability than standard O-rings. Learn how they work and shop Selo’s range.

X-Rings (Quad Rings): What They Are and Why The...

Matthew Jones

X-rings, also called quad rings, offer better sealing, less friction, and more stability than standard O-rings. Learn how they work and shop Selo’s range.

Flatlay of assorted Woodruff keys in different sizes arranged around the orange and black Selo logo, illustrating their half-moon shape.

What Are Woodruff Keys and Why Do They Matter?

Matthew Jones

Small but vital, Woodruff keys lock gears and pulleys in place. Learn what they do, why they matter, and where to find the right size at Selo.

What Are Woodruff Keys and Why Do They Matter?

Matthew Jones

Small but vital, Woodruff keys lock gears and pulleys in place. Learn what they do, why they matter, and where to find the right size at Selo.