System 7 Superflex Fabric Primer Base - Gallon


Many in stock



The SF7500 System 7 fabric primer is the shining star of the Superflite urethane system.  It is a high build flexible primer with excellent filling and sanding properties.  

Mixing Ratio:

Mix 4 parts SF7500 primer base with 1 part SF7600 primer catalyst.  May be reduced up to 50% with any of the 7800-series reducers.

Pot life at 77ºF:

1 hour

Clean up:

Use lacquer thinner, MEK, acetone, or any of the 7800-series reducers.

Gun Setups:


Gravity Feed:  1.4mm-1.8mm

Siphon Feed:  1.4mm-1.8mm

Air Pressures:

Conventional at Gun

Gravity Feed:  30-40psi

Siphon Feed:  35-45 psi

HVLP at cap:  8-10 psi


  • Apply medium wet coats over substrate to desired film thickness
  • Allow 10-25 minutes between coats;
  • Scuff after 4 hours before applying topcoat or recoating
  • Clean gun after spraying is completed


A fresh air breathing system is required when spraying this product.

Return Policy

Returned goods must have been originally purchased from Superflite and returned to us in new unopened condition, in their original packaging within thirty (30) days from the invoice date. Please package the return goods in a proper shipping box to protect the integrity of the original package and items.

All returned goods require a Return Material Authorization (RMA) be issued in advance of the return. RMA’s can be obtained by contacting a Superflite Customer Service Representative. Items returned without an RMA will not be processed and will be returned to you at your expense. You MUST call Superflite before returning anything.

All returned goods are subject to a restocking and handling charge of up to 25%.

If the parts or products were “Special Order” the return is subject to the manufacturer’s willingness to accept the product back. The return is also subject to any manufacturer’s handling charge plus a restocking fee.

All Superflite paints/topcoats are mixed as ordered. If a color other than those offered on the Superflite color chart is ordered and mixed, it cannot be returned, nor will it be refunded. If there is a discrepancy with the color ordered and received, it must be reported within seven (7) days for a return or refund to even be considered.

No restocking fee will be charged on returns resulting from our error. All return freight must be prepaid. If returned goods are lost or damaged in transit to Superflite, you must submit the claim against your carrier.

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