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Water Texture

HOTSHIELD MUFFLER/MANIFOLD WRAP

Get to know our variety of manifold wraps. 

HOTSHIELD MUFFLER/MANIFOLD WRAP

The hotshield muffler/manifold wrap is a protective fiberglass wrap that can be used to insulate hot sections within the engine area. The wrap comes in several configurations, sizes and heat ranges. It is very important to determine the heat range of the hot section that is to be insulated. Always error on the side of more heat protection rather then less. The thicker wrap will offer more protection than the thinner wrap. The foil backed wraps will offer even more protection than the non-foil backed models. The various models of hotshield wraps are listed below with their size, width, length, and heat level.

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Manifold Wrap Selections:

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Installation Tips

The installation of the Hot Shield Minis or the commercial fiberglass tape is an easy installation. A key factor in the process is to determine the heat level you are working with as the model and type of tape you use, will need to meet the heat requirements of your project.

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All Hot Shield Minis and the Hot Shield commercial fiberglass tape is E-glass quality. Most fiberglass tape wraps are constructed from C-glass which is not as durable nor does it have the higher temperature range that the E-glass offers. So now you have established the temperature range your working with and you need to match it with the correct protective wrap. Most Hot Shield wraps will fall into two (2) heat ranges. Standard E-glass without foil back will protect up to about 750 Fahrenheit or about 399 Celsius. If you need a higher degree of temperature protection, you can use one of the Heat Shield products that have a foil backing. The foil backed products will extend the temperature protection level up to about 950 degrees Fahrenheit or 510 degrees Celsius . When installing the Heat Shield foil backed tape, wrap the hot section with the foil portion of the tape on the outside of the wrap. So the foil portion of the tape will be facing on the outside of the wrap, not facing inward. You can extend several layers to add additional heat protection. A simple method of installing the tape is to secure it in place with stainless steel locking wire. .041 or .032 seem to work well for this task. A few wraps of the stainless steel wire along the length of the fiberglass tape should secure the tape in place

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Image by Mel
Anchor 1
  • Do you have the correct size square braid packing as a retainer?
    This is the number one cause of overheating. Forcing oversized packing into the stuffing box will cause overheating.
  • Is there a problem in the drive train that might contribute to the overheating?
    Shaft out of alignment, strut bearing issue or a motor mount that may have failed. Check it all out.
  • Do you have the stuffing box nut too tight?
    Number two (2) reason for overheating. Everyone wants to tighten the nut on the stuffing box right? Wrong! Tighter is not better. It simply compresses the packing and the seal it forms is less effective. Hand tighten and then a slight additional pressure with a wrench will do the job.
  • Is the packing leaking?
    During the first few hours of operation, some of the paste you put on the square braid packing will leak out of the stuffing box, this is normal. If you encounter paste and moldable material leaking out of the stuffing box, you may have installed a square braid packing, as a retainer, that is too small for your stuffing box. If that is the case you will need to replace the retainer square braid packing with the correct size as the moldable material will continue to leak out of the stuffing box.
  • What can I do with the leftover materials?
    The left over moldable material can be used to stop leaks in your rudder stuffing box. It is the same procedure as the stuffing box except you may tighten the rudder post nut tight after the installation of the packing and the moldable material.
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