Remember, you can never be too well protected, but it’s easy to be under protected and end up with damage that could have been prevented with fenders of a sufficient size and strength. The price of proper fendering is a very small percentage of the price of a boat or yacht, and the one time they protect your boat from damage will pay for the cost of fenders many times over.

Will my fender pop is my boat slams up against it really hard?

While it is possible to pop a fender, it is quite difficult. Our fenders have been through major storms and even several hurricanes without damage.

The normal operating pressure for an Hysun Marine Inflatable Fender is 1 psi internal pressure. They have been pressure tested to over 45 psi.

Help! My fender got too soft in the cold/too hard in the sun. Why?

All inflatables get harder in direct sun and hot weather and get softer in rain or cooler weather. This is normal.

For example, heat will increase the pressure inside an inflatable by .03 psi per one degree of temperature increase. Effectively, a 33 degree increase in temperature can make a hard inflatable extremely hard or a soft one much harder. This also works in reverse and a hard inflatable will soften if the temperature drops by that amount. Humidity also has a slight impact on the changes. It is normal, and good practice, to adjust the pressure in your inflatable product as the weather changes.

How Are the Hysun Marine Fenders Constructed?

Hysun Marine Inflatable Fenders are made from heavy, high denier, polyester fabric (used in dingy construction), and heavily PVC coated inside and outside. The product is hand glued with seam reinforcement inside and outside. The seams are from three to four layers thick to assure seam integrity. The attachment points are stainless steel “D” rings on both ends, securely fastened with Kevlar thread to a layered backing plate. The fill valves are selected to assure tight seals and rapid inflation and deflation.

How Puncture and Abrasion Resistant Are Hysun Marine Fenders?

Any fender, no matter what it’s made from, can be punctured or abraded. Hysun Marine Inflatable Fenders absorb a tremendous amount of punishment before failure; as is reflected in our product warranty. They will withstand very high compression loads that will collapse a normal vinyl fender, leaving you with very little between your boat and damage. Normal care should be taken in fender placement (if you see a sharpened spike or nail sticking out of the dock or piling, don’t put any fender there if avoidable) and they will last a very long time.

What About UV Protection?

The Hysun Marine Inflatable Fenders have built-in UV protection. We have tested fenders in Florida and the Caribbean without failure or color fading.

Can Hysun Marine Inflatable Fenders be repaired if punctured?

Hysun Marine Inflatable Fenders can be easily and quickly repaired by non-professionals with readily obtainable glue and patches. However, as part of our Product Warranty program, we will repair Hysun Marine Inflatable Fenders in our Florida location or they may be sent to one of our certified service centers in our dealer network.

What is your Product Warranty?

Hysun Marine Inflatable Fenders covered under an unconditional warranty for the first year of ownership from date of purchase and Hysun Marine Docking Solutions warrants that its products are free of manufacturer’s defects for an additional 2 years from date of purchase. During this 3-year period, Hysun Marine Inflatable Fenders may be returned to the factory and will be repaired at no charge to the owner.

New in 2013: We have changed our warranty to create the six year warranty program. The best in the industry, we still have our first year unconditional warranty. For the next three years, we warrant that our products are free from manufacturer's defects. During this FOUR year period, Hysun Marine Inflatable fenders may be returned to the factory and will be repaired at no charge to the owner. The final two years of the warranty program are a 20% discount on a replacement fender for any damaged and unrepairable fender. During this period, and beyond, we will always attempt a repair on the fender first, and charge a $50, $75, or $100 flat rate repair charge, dependant on the size of the fender, only if the fender can be repaired.

Air Pump Questions

What is air volume and pressure?

There are two basic types of pumps. High volume/low pressure and low pressure/high volume. Hysun Marine Inflatable Fenders require high volume/low pressure pumps; these are available when you purchase your Hysun Marine fenders or at your local marine store.

Which air pump should I use?

Any of the Hysun Marine Inflatable Fenders can be inflated up by either a foot or canister pump. Our smallest fenders (12” x 29”) can be inflated to 1 psi of air pressure with our least expensive foot pump in 15 - 30 seconds. We recommend our higher volume foot pumps for our larger fenders up to 18” x 58”. Eighteen-inch fenders take about 2 minutes with the manual pump and less than a minute with a high volume electric pump. For our larger fenders, use electric pumps, particularly the high volume units are desirable, but not required. Our largest fenders can be inflated in about 2 minutes with a high volume electric pump.

What is "psi"?

This stands for "pounds per square inch." It is a unit by which air pressure is measured.

Do I need an air gauge for an Hysun Marine Inflatable Fender?

Hysun Marine Inflatable Fenders use only 1 psi of air pressure and can, due to compression, withstand pressures many times that. A gauge is not needed for your Hysun Marine fenders. As a rule of thumb, 1 psi of pressure in an Hysun Marine Inflatable Fender feels like a soft grapefruit if you squeeze it with your full hand.

How fast will this inflate?

Pump speeds, rated in flow rate in either LPM (Liters Per Minute) or GPM (Gallons Per Minute) gives you an idea of how fast a particular item will fill up. The higher the volume the faster it will blow up. However, the amount of pressure needed (only 1 pound for the Hysun Marine Fenders and 3 pounds for most dinghies) will change the amount of time needed. Higher pressure requires more time and more effort on the part of the pump.