Car seals for locking valves. What are the options?

A car seal is a disposable device used to lock or seal a valve to prevent tampering or inadvertent operation.

This basic functionality doesn’t require too many options in the specification. In its most simplistic form, the seal needs to be long enough to reach around the valve wheel or lever and the valve body, and should provide a sealing function.  In other words, once it's deployed you must cut (and destroy) the seal.

But in the years since we've been supplying car seals our discerning customers have sought other features.

In this specification summary we discuss these features and their relevance.

Cable Length:

To optimise our inventory we stock car seals with a longer cable (1000mm). But customers often request a shorter car seal because their valves are much smaller. In this event we point out that the unwanted cable can be cut off. But it’s important to ensure that this is done AFTER the cable has been threaded through the seal head. The reason for this is because the end of the cable can fray after cutting making it almost impossible to thread through the hole in the car seal head.

The question arises of cost. A shorter seal should be lower cost than a longer seal. Theoretically that’s true but the saving is so small, the additional cost of increasing our inventory offsets any saving.

Cable Diameter.

Our standard car seals have 2.5mm (3/32”) diameter, and this perfectly adequate for the application. The breaking strain if over 500kg (1102lbs). The cable is a multi-strand galvanised steel.

Colour:

There are no standards which stipulate the use of coloured car seals. But here at Total Lockout we took a practical view at the use of colour coding. Given that car seals are used to seal valves in the open and closed positions it seems obvious to use a green car seal to lock a valve open and a red car seal to lock the valve closed.

Thereafter, to offer further choice, we also stock blue, yellow and black car seals.

Material:

We offer two choices of material for our car seals. Aluminium body with anodized colouring. These car seals have a galvanised steel cable. We also offer a stainless steel option which offers excellent resistance to corrosion in a marine environment. The car seal head is made from Zinc, while the cable is 302 stainless steel.

We also offer a limited range of plastic valve ties which can be used for car sealing valves. Similar to steel cable car seals, these have a unique identification serial number. The seal length is 300mm (12”).

Marking & Identification:

By default, every car seal we supply has a unique serial number. Each time a new customer orders car seals we record the serial numbers supplied. By doing this we can unsure that duplicate numbered seals are never supplied.

Car seals can also be etched with bespoke markings, specific to your requirements. There is a minimum order quantity of 100 pieces for bespoke marking. Prices on application.

Function:

There are two styles of car seal functionality. These are self-locking and breakaway key. As the name suggests, a self-locking seal becomes sealed (locked) as soon the cable enters the body. The cable can be pulled tight but cannot be released.

The other style has a breakaway key to seal the device. When the cable enters the body, it can still be removed. To create a seal, the cable must be pulled tight, then the breakaway key is manually turned until it snaps off. The tip of the key jams into the cable locking it in place.

Optional Extras:

Tags:

To improve identification, we offer car seal tags which can be used in conjunction with the seal. This is a small red or green tag which can be threaded through the seal when fitting to the valve. The tags are available in red and green and designate the valve as being ‘car seal closed’ or ‘car seal open’.

Wire cutters:

The car seal cables can be tough to cut. Ask us about specialist cutting tools to make this task easy.

Customisation:

The speciality of Total Lockout is to match a customer’s requirements wherever possible. And if this means customising your car seals, we can usually do it. So if you have any bespoke requirements for your car seals, contact us today and tell us what you need.


Contact Total Lockout (Safety)

UK & EMEA

Unit 10 Warner Drive
Springwood Industrial Estate
Braintree, Essex, CM7 2YW, United Kingdom

Tel: +44 (0)1376 325506

USA & Canada
4500 140th Ave N, Suite 101
Clearwater, FL, 33762

Tel: (727) 608 4325

E-mail: sales@totallockout.com
www.car-seal.com