SealGuard Inc Polyurethane Grout

Chemical Grout FAQs

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Does SealGuard manufacture its own products?

Yes - SealGuard products are all proprietary formulations. They are available only from us or an approved re-seller, like Source One Environmental. We do not manufacture products for any other companies.

Will I pay a higher price if I purchase SealGuard products from Source One Environmental instead of directly from SealGuard?

No - all of our customers pay the same regardless of whether they purchase from us or from Source One Environmental.

How do I know if I will be a Source One Environmental customer or a SealGuard customer?

Source One Environmental is our master distributor in the wastewater industry throughout the US, Canada, Puerto Rico and Brazil. If you are involved in wastewater contracting, are a municipal or other authority, or are involved in any other wastewater related activity, you would purchase SealGuard products from Source One Environmental. All other industries not related to wastewater activities will be customers of SealGuard's.

SealGuard's technical support is available to all customers for questions or comments. We will be there for you no matter who you purchase products from.

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Application Issues


I am trying to stop a relatively low flowing leak using HyperFlex but the grout is flowing out of the front of the crack before reacting. What is causing this?

HyperFlex is a much slower reacting material than SealGuard II. This is of benefit in slower flowing water leaks as the HyperFlex will travel further through the leak path before reacting - giving a more complete seal. When HyperFlex is running or washing out prior to reacting, it is helpful to push burlap, oakum or even rags into the face of the leaking crack to hold the HyperFlex in behind the face and give it a chance to react. Use a putty knife or screwdriver to force the chinking material into the crack, and then inject HyperFlex normally. When the HyperFlex has cured the chinking may be removed.

I have been using HyperFlex and it appears to be taking longer than normal to react and cure. What can be causing this?

The primary cause of slow reaction is low temperature, either of the material itself, the ambient air, the substrate or some combination of the three. HyperFlex tubes can be warmed in hot water or at the least in a warm trunk while in extreme cold; the substrate can be warmed with propane or other torch. In addition, HyperFlex requires water to begin its reaction. A dry or insufficiently wet substrate could result in much longer than normal reaction times.

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SealGuard II

I am having trouble with SealGuard II washing out around the mixer when I am injecting it into heavy flowing water. Is this normal?

No - there should be very little or no water escaping either around or through the mixer once tapped into place. If the fit is not tight then water can wash the SealGuard II out before it has a chance to stop the leak. The primary cause is that the hole drilled was too big. Rather than drill another hole, a single thickness of duct tape wrapped around the mixer prior to insertion could provide an adequate seal.

What advantages does SealGuard's patented check valve, located in the SealGuard II static mixer assembly, give the user versus competing dual component urethane systems?

Our patented check valve mixer assembly offers several advantages over those of our competitors. Because the valve keeps the reacting urethane in the mixer instead of reacting back into your cartridge set, you can detach a partially used tube set from the mixer and either save or use the remainder, along with a new mixer at a different injection point. In addition, since the reacting polyurethane is kept in the mixer rather than coming out, there is no way the material, which can get quite hot while curing, can splash on or spill onto the operator. Finally, in high water flow situations, the check valve will prevent water from flowing through the mixer when it is tapped into the injection hole, allowing for much easier fastening of the mixer to the tube set. Water, particularly fast flowing coming through the mixer, would obviously make this operation more difficult.

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HyperFlex & X-Seal

How will I know when HyperFlex or X-Seal is fully cured?

When the reacted foam is dry and non-tacky. The length of time for a full cure is dependent primarily on temperature. Although the amount of water present, its PH and the degree of confinement in the space will impact reaction time to a lesser extent. The general rule is that reaction times get faster as the temperature increases, and slower as it decreases.

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Can X-Seal be used to adhere metal manhole lids to the manhole assembly without using any other fastening devices?

No - While X-Seal will provide a hermetic, waterproof seal between metal manhole components, it is not designed to replace the mechanical fasteners commonly used to attach metal manhole covers to the chimney. X-Seal will, however, create a tenacious bond between porous materials such as concrete, wood, brick or stone in addition to providing a permanent non-shrinking seal.

Will X-Seal adhere to plastic pipe?

No - Just as with metal, X-Seal will provide a watertight seal and limited bonding capability, but should not be used as the primary means of adhesion for PVC, HDPE or other types of plastic pipe.

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HyperFlex, X-Seal, SealGuard II

I have a water leak in an underground concrete structure. How will I know if I need SealGuard II or HyperFlex?

SealGuard II is designed to stop high flow leaks in excess of 50 gallons per minute or higher. It reacts in 1 to 3 seconds so that it can’t be washed out of the leak path. SealGuard II leaks are characterized by high volumes of flowing water or jets of water coming from a crack, hole or deteriorated manhole lateral boot. For slower flowing water, weeping barrel or cold joints and cracks, HyperFlex is the most economical solution. Burlap, oakum or rags may be used to "chink" cracks or holes to hold the HyperFlex in the substrate and allow it to react, if necessary. Just remember, HyperFlex needs a little water to kick off its reaction, so wet the substrate down slightly before applying HyperFlex.

Will your products still react in the presence of salt water?

Yes - they will; reaction, expansion and the properties of the grouts when cured will be unchanged from that of fresh water.

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Related Files

PDF Quality Assurance Policy