Q. Will vibration cause this protector system to loosen with a consequent loss of positive pressure?
A. No. The plastic materials do not have a vibration resonance.

Q. Does the protector system provide protection from mechanical damage during installation and use?
A. Yes. It is manufactured with a high density, high impact resistant polyethylene plastic material.

Q. What if the protector system is over pressurized causing the membrane to protrude, or even rupture?
A. If over pressurized, simply loosen the protector one or two turns, allow the excess grease to escape between nut surface and seal, then re-tighten. If the membrane is ruptured, it can be replaced easily in a few seconds.

Q. Can this protector system be used on existing nuts and bolts which show corrosion?
A. Yes. It is recommended to remove existing corrosion products by wire brushing to remove loose scale. Using the protector system with a corrosion resistant grease will inhibit further corrosion.

Q. Can this protector system be supplied with special, non-standard, thread configuration?
A. Yes. It can be properly tapped with specialty thread types. Click here to view our standard sizes.

Q. Other than cost savings, what advantage does the protector system offer over stainless steel fasteners?
A. First, is mechanical strength. ASTM A193 shows carbon steel B-7 studs with a minimum yield strength of 105,000 psi, while ASTM shows 316 stainless steel grades B&M at 75,000 psi. Second, galling is a consistent problem with multiple make up / break out of stainless steel. Third is availability. Carbon steel fasteners are stocked and readily available from multiple sources throughout the world. Specialty stainless steel fasteners may have to be machined (longer lead times) and are usually not stocked because of high inventory costs.