Custom Industrial Seals
Oil Seals, Viton Seals, Hydraulic Seals, Extrusion Seals & More
MSO Seals offers a huge variety of high quality, wholesale, custom industrial seals. Get your seals made the same day you order them! We will make any size of any kind of industrial seal and ship the same day. Have your order ready? Fill out your custom seal proposal to have one of our experts contact you today.

MSO Seals and Gaskets manufactures industrial seals of all types, including metric seals, standard seals, and odd or hard to find seals.
We manufacture the following custom industrial seals:
- U-cup seals
- Vee packing seals
- Oil seals
- Pneumatic seals
- Polypack seals
- Wiper seals
- Guide ring seals
- O-ring seals
- Teflon® piston seals
- Teflon® seals
- Piston seals
- Rod seals
- Valve seals
- Excluder seals
- Rotory seals
- Pump seals … and just about any other type of industrial seal!
Our wholesale custom industrial seals are made of the finest materials, including:
- Polyurethane
- MSO Special Polyurethane
- NBR
- Silicone Rubber
- EPDM Rubber
- Fluorcarbon-Viton
- MDX Nylon Gray
- Nyloil
- Natural Nylon
- UHMW
- Hytrel 4506
- Hytrel 5555HS
- PTFE Virgin Teflon
- PTFE Nickel Teflon
- Varying blends of Teflon
- Viton®
- Teflon®
- HNBR
- NBR
- Silicone Nylon
- POM
- Peek, and more!
Send us a sample drawing or steel dimensions, and we’ll manufacture your custom industrial seal, ready the same day if needed.
Request your custom industrial seal proposal today!
Common Sealing Questions & Answers
Q: I just installed a new seal and it leaks! What’s wrong?
A: The first few hours of operation is called the “bedding-in” period. This is not only necessary for the meniscus to form, but also for the sealing edge to flatten. During this period of time leakage is likely.
Q: I have installed the seal but once I start my unit it walks out of the bore. What’s wrong?
A: One of two problems. Pressure! Our standard seals only handle 5-7 PSI. If your unit is exerting more then the maximum pressure allowed it will blow the seal. A MSO ADL-P type seal which handles up to 140 PSI (10 bar) is your solution. Bore Tolerance can be another problem. Our seals are press-fit into your housing. If your housing is worn or out of tolerance, the seal will not achieve proper press-fit, thus having a loose fit, This will allow the seal to walk out of your housing.
Q: I am not achieving the seal life I desire. What’s Wrong?
A: Many factors can attribute to this problem. Listed below are some of the situations you should look into.
1. Chemical compatibility – Is the chemical you are sealing compatible with the chosen sealing elastomer?
2. Temperature – Is the operating temperature within the limits of the chosen elastomer?
3. Shaft finish – Our seals operate with a minimum shaft hardness of 45 HRC. The shaft finish should be in the range of Rt = 1-4um (Ra = 0.20 – 0.80um) in the area of the contact surface, rifling marks are not permitted.
4. Shaft speed – Displayed in our Tolerance page is a graph displaying shaft diameters and gives recommended maximum RPM and surface speed.
5. Lubrication & Friction – Adequate lubrication of the sealing lips assures good seal life. Poor lubrication creates more friction and heat. This combination will make any seal fail prematurely. PTFE seals are the only type of seal we sell that will run in dry applications.
Have your seal same day, we will make any size of any kind of seal and ship the same day. more information is here.
If you want to get a quick quote please call us or let us call you.
Have your order ready fill out this proposal and we will call you in few minutes.
Common Sealing Questions & Answers
Q: I just installed a new seal and it leaks! What’s wrong?
A: The first few hours of operation is called the “bedding-in” period. This is not only necessary for the meniscus to form, but also for the sealing edge to flatten. During this period of time leakage is likely.
Q: I have installed the seal but once I start my unit it walks out of the bore. What’s wrong?
A: One of two problems. Pressure! Our standard seals only handle 5-7 PSI. If your unit is exerting more then the maximum pressure allowed it will blow the seal. A MSO ADL-P type seal which handles up to 140 PSI (10 bar) is your solution. Bore Tolerance can be another problem. Our seals are press-fit into your housing. If your housing is worn or out of tolerance, the seal will not achieve proper press-fit, thus having a loose fit, This will allow the seal to walk out of your housing.
Q: I am not achieving the seal life I desire. What’s Wrong?
A: Many factors can attribute to this problem. Listed below are some of the situations you should look into.
1. Chemical compatibility – Is the chemical you are sealing compatible with the chosen sealing elastomer?
2. Temperature – Is the operating temperature within the limits of the chosen elastomer?
3. Shaft finish – Our seals operate with a minimum shaft hardness of 45 HRC. The shaft finish should be in the range of Rt = 1-4um (Ra = 0.20 – 0.80um) in the area of the contact surface, rifling marks are not permitted.
4. Shaft speed – Displayed in our Tolerance page is a graph displaying shaft diameters and gives recommended maximum RPM and surface speed.
5. Lubrication & Friction – Adequate lubrication of the sealing lips assures good seal life. Poor lubrication creates more friction and heat. This combination will make any seal fail prematurely. PTFE seals are the only type of seal we sell that will run in dry applications.
Have your seal same day, we will make any size of any kind of seal and ship the same day. more information is here. If you want to get a quick quote please call us or let us call you. Have your order ready fill out this proposal and we will call you in few minutes.

