Want to know more about the products we offer? In addition to providing top-of-the-line industrial hose, sheet rubber and other accessories, Texcel also wants to help you stay informed about industry standards, procedures and more to make sure you always get the premier products and services you need.
Rubber’s qualities make it the perfect match for many industrial and commercial uses, as well as a variety of other applications. Products made from rubber include: industrial hose, gasketing material, matting, conveyor belt systems and marine fenders.
Advantages of Rubber:
Consult our Chemical Resistance chart or S.T.A.M.P.E.D. guidelines to learn more about the properties of rubber and to find out what types of products will best fit your needs.
Storage and Product Life.
When properly stored, sheet rubber has a great shelf life. Remember the following tips to get the most out of your products:
Measuring Roll Length
Need help determining how to measure the length of your sheet rubber? Here’s a simple, quick rule-of-thumb equation to assist you, whether you’re reviewing inventory or looking to help a customer place an order:
Roll Length in Linear Feet = (OD + ID) x (# of Laps) x 0.131
Several methods can be used to tag and track sheet rubber rolls. While some spray paint the ends of rolls with different colors to indicate rubber compound, size and date received, others attach tags to keep track of this information.
The best method depends on several factors, including how the warehouse is managed. We prefer tagging the rolls because it is a cleaner process, and different color tags help identify rolls quickly.
Don’t forget — Texcel sheet rubber is continuously marked with a 1” high ink brand show the material type, durometer and production date code.
Whenever possible, tag rolls with weight and length when received and update tags whenever material is cut. The initial effort will save you time and money in the long run!
Determining Cloth Inserted Material.
Nylon, which has replaced cotton fibers as the predominant material inserted into sheet rubber, will not absorb water like cotton. This quality helps maintain seal stability and integrity.
You can determine which material is used with a flame test. Light the strands of the material with a lighter or match. Cotton will burn, whereas nylon will melt and “ball up” like plastic.
A gasket creates a positive seal between two relatively stationary parts to keep fluids or other materials from leaking out between the two surfaces. The gasket functions properly if it creates a seal, maintains the seal for the required length of time and can be easily replaced. The gasketing material must be matched to the fluid being conveyed, the fluid’s temperature and other application parameters.
Performance factors important to sealing include:
Proper Gasket Installation
Proper installation of gaskets is critical to achieving a seal and avoiding problems. The parameters below are endorsed by leading industry organizations to ensure safety guidelines:
Hoses and couplings should be periodically inspected to ensure proper performance in use. Inspection intervals depend on the application. Important factors include:
Safety experts recommend inspecting hose on a daily basis. Any change in the hose can indicate a possible problem. Possible causes include chemical incompatibility, leakage paths, ozone aging and damaged hose. It may be necessary to shut down operations in order to closely inspect a hose.
Signs to look for include:
Maintenance and Care
With proper maintenance and care, industrial hose will have a long life even in tough applications. The following general guidelines can maximize your investment.
Hoses and couplings should be periodically hydrostatic tested to ensure proper performance in use.
Caution: Hose under pressure can be dangerous and tests should be performed by trained personnel using appropriate tools and methods. Take necessary safety precautions to avoid property damage and bodily injury.
The following industry guidelines are used for hydrostatic testing:
Storage and Product Life
Remember the following tips when storing rubber hose and other rubber products:
Friction from materials flowing through hoses can cause the buildup of static electricity, which can cause serious safety concerns. Hoses handling dry powders and many fluids, such as petroleum products, generally need to be electrically bonded, allowing for static charges to be dissipated into the couplings and piping or machinery.
Get into the habit of static grounding every hose assembly unless instructed otherwise.
Three common methods for dealing with hose static:
Pressure Limits on Hose Assemblies
With thousands of potential coupling-hose combinations, remember that what fits is not necessarily what is right! Much like a spare tire on a car, it may fit but can be used only under a certain speed limit.
The working pressure of an assembly is the lowest working pressure of either the hose or the coupling. For example, if a hose is rated at 250 psi but the coupling is rated only at 150 psi then the working pressure of the assembly is no more than 150 psi. In this case, responsible steps to avoid bodily injury include the following:
Abrasion resistant hoses and pipes occasionally fail from internal wear much faster than expected. Suddenly you’re confronted with a concerned customer, and everyone is unsure about how to fix the situation.
It can be challenging to understand the cause of premature wear, but here are a few suggestions:
The flow of abrasive material is like a high velocity stream going in a straight direction. As long as the hose or pipe goes in the same straight direction, there is hardly any wear. It’s like a racetrack that allows a car to go 250 miles per hour.
However, hose is used to re-direct the stream in a different direction, which is when abrasion becomes an issue. Unlike the racecar at a curve, the material flow does not slow down. It wears the hose at a rate proportional to the sharpness of the bend. Just like the racecar, if the curve is too sharp a collision is inevitable. Look for the following:
Short Standard Lengths
We’ve all cut long hose lengths to make assemblies. Occasionally, there is a shorter length than expected, but here’s a simple solution:
Industrial hose is made longer than listed on technical data sheets. For example, a mandrel built hose is built on mandrels that are 102’ to 104’ long to allow for end trimming and shrinkage factors during vulcanization. This longer length ensures that the hose will be as close to the 100’ specified.
Shrinkage is predictable on many types of hoses. Styles produced with helix wires have the most shrinkage. In addition, they are the ones most commonly cut by distributors.
Water suction, tank truck and chemical suction styles have shrinkage due to the “coil spring” effect of the helix wires. Shrinkage increase as the diameter goes up. Cross-linked polyethylene chemical hose is known to shrink more than most.
Investing a few moments initially can help you overcome any challenges. Use the following tips to avoid problems:
For example, 3” x 20’ water suction hose with KC s. The assembly’s “cutoff factor” is 3 inches each. Cut the hose to 19’6” to give an assembly with 20’ overall all length (OAL).
U.S. Coast Guard Certification
The United States Coast Guard has the following requirements for any petroleum or hazardous material hose that is marked as "USCG Certified." For more information or to verify the most recent requirements, please visit www.uscg.mil.
154.500 Hose assemblies.
Each hose assembly used for transferring oil or hazardous material must meet the following requirements:
(a) The minimum design burst pressure for each hose assembly must be at least four times the sum of the pressure of the relief valve setting (or four times the maximum pump pressure when no relief valve is installed) plus the static head pressure of the transfer system, at the point where the hose is installed.
(b) The maximum allowable working pressure (MAWP) for each hose assembly must be more than the sum of the pressure of the relief valve setting (or the maximum pump pressure when no relief valve is installed) plus the static head pressure of the transfer system, at the point where the hose is installed.
(c) Each nonmetallic hose must be usable for oil or hazardous material service.
(d) Each hose assembly must either have:
(1) Full threaded connections;
(2) Flanges that meet standard B16.5, Steel Pipe Flanges and Flange Fittings, or standard B.16.24, Brass or Bronze Pipe Flanges, of the American National Standards Institute (ANSI); or
(3) Quick-disconnect couplings that meet ASTM F-1122.
(e) Each hose must be marked with one of the following:
(1) The name of each product for which the hose may be used; or
(2) For oil products, the words "OIL SERVICE"; or
(3) For hazardous materials, the words "HAZMAT SERVICE--SEE LIST" followed immediately by a letter, number or other symbol that corresponds to a list or chart contained in the facility's operations manual or the vessel's transfer procedure documents which identifies the products that may be transferred through a hose bearing that symbol.
(f) Each hose also must be marked with the following, except that the information required by paragraphs (f)(2) and (3) of this section need not be marked on the hose if it is recorded in the hose records of the vessel or facility, and the hose is marked to identify it with that information:
(1) Maximum allowable working pressure;
(2) Date of manufacture; and
(3) Date of the latest test required by Sec. 156.170.
(g) The hose burst pressure and the pressure used for the test required by Sec. 156.170 of this chapter must not be marked on the hose and must be recorded elsewhere at the facility as described in paragraph (f) of this section.
(h) Each hose used to transfer fuel to a vessel that has a fill pipe for which containment cannot practically be provided must be equipped with an automatic back pressure shutoff nozzle.