Do you have a pipe dream? We will support you !

The future is here – the future is blue! The brand new, patent pending, low friction u-bolts. The 1111 series.

The future is here – the future is blue! The brand new, patent pending, low friction u-bolts

Our first line of U-bolts with a rubber shroud were the ever popular 1108 series. A basic rubber sleeve and pad added to the U-bolt to act as an insulator

1108 Series Rubber insulated U-bolts

1108 Series Rubber insulated U-bolts

These U-bolts are ideally suited to insulating the metal of the pipe / tube from the U-bolt. Perhaps they are dissimilar metals, and you need to prevent any enhanced corrosion problems.

These are not classed as either grip or non-grip and could be used in both situations depending on placement of nuts, or trimming the rubber slightly

You can see our range of insulating rubber lined u-bolts on our website : Click Here

Our next foray into rubber encased U-bolts was the heavy duty anti-vibration U-bolts

1109 Series heavy Duty anti-vibration U-bolt

1109 Series heavy Duty anti-vibration U-bolt

These are very definitely grip type u-bolts. Designed to grip the pipe / tube but also to absorb any vibration that may be coming from the pipe. With these U-bolts the rubber is moulded onto the u-bolt and is therefore fixed in postition

But we have the anti-vibration u-bolt in another exiting flavour – the light duty style with  flame retardant rubber.

These U-bolts have a d-shaped cross section, with channels designed to absorb small vibrations

You can see our range of heavy and light duty anti-vibration rubber lined u-bolts on our website : Click Here


So with insulating and anti-vibration u-bolts, what else is there?


Introducing our brand new, patent pending, low friction, non grip, anti-vibration u-bolts. 

Graphskill’s new Series 1111 Ubolts


These ubolts have been developed to enable pipes to be securely guided with a minimum of friction so safe-guarding the pipe from expansion & contraction wear due to temperature changes; whilst also reducing the noise & vibration of the pipe.

They are fitted with a gap between the ubolt and the pipe enabling the pipe to expand & contract yet keeping it fully guided in position.

The rubber base pad acts to reduce the noise & vibration of the pipes as they carry their fluid and it is fitted with a PTFE strip to reduce the friction and hence protects the pipe as it expands & contracts. The pad also contains a metal spacer for the U-bolt legs to go through giving strength to the pad, and a firm anchor for fastening the nuts at the required position.

The patented-pending ubolt sleeve is a low friction silicone rubber which rotates around the ubolt to enable the pipe to move unrestricted but be fully guided in position on the supporting framework.

These are a much cheaper and more reliable solution to the conventional rubber lined ubolts which have PTFE bonded to the inside surface of the rubber coated ubolt.

Although Ubolts with the PTFE strip bonded to the rubber profile around the ubolts have been in common use for many years, they are prone to the PTFE separating from the rubber due to the difference in the expansion coefficient of the rubber and the PTFE. This problem is eliminated by Graphskill’s unique solution of a single medium with minimal friction.


Knobs – so to speak

Louise is a crafty lass, she makes glass handles/knobs for draws and small units and she uses our M4 threaded bar to help

She said “I will melt glass on to a sleeve which is screwed on to the handle and shape it and once its been kiln fired unscrew the rod and put a handle screw on instead ”

And what fabulous looking handles she makes :


You can check out her wares at these links:

Foam pipe pigs – Pipe Purge Dam

We have recently been making some foam pipe purge dams

Pipe purge dams are basically a foam pipe cleaning pig with an addition. The addtion is a metal tube (either copper or stainless steel)

So, what are they for?

Well they are used when welding pipes. A standard foam pig is inserted into one end of the pipe and a purge dam in the other end. They are then manoeuvred so that they are sitting either side of the welding area. The tube can then be used to pump an inert gas (Argon) into the pipe welding area so providing a nice safe environment for the welding to take place. The argon helps to remove contaminants that are in the air so producing a better quality weld

Standard foam cleaning pigs are available directly from our site, but for the specials you need to talk to us 🙂



New line: Stainless Steel Universal Exhaust Pipe clamps

We were recently asked if we manufactured exhaust pipe clamps in Stainless Steel. We already supplied in the more standard Bright Zinc Plated variety.

It sounded intriguing. There are obvious benefits of course, not least of which is the longevity compared to BZP

So we went ahead and made some, and they look great

Stainless Steel Exhaust Pipe Clamp

Stainless Steel Exhaust Pipe Clamp

We have a range of sizes from 32 mm – 101 mm pipe OD

They are now starting to get some interest from classic car enthusiasts who need to replace their BZP clamps with something longer lasting.

You can get more details from our main site

Universal Stainless Steel Exhaust Pipe Clamps

We would love to hear your thoughts

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