Techflex® Spark Plug Boot Insulators
Fiberglass Spark Plug Ignition & Wire Protectors - Max Temp 1200ºF
0.0 / 5
Insultherm Spark Plug Boot Insulators
- Resin Coated Fiberglass
- Will Not Burn or Support Combustion
- Easy, No Tool Installation
- Operating Temps: -94°F to 1,202°F (-70°C to 650°C)
- Extremely Abrasion and Cut Resistant
- Resists Common Chemicals & Solvents
- Available In 4 Colors
- Melt Temp: 2,048°F / 1,120°C
- Inside Diameters Are Measured as Round Not Flat
Insultherm braided fiberglass sleeving has been the first choice among automotive professionals and enthusiasts alike for many of their thermal protection applications. These innovative sleeves offer the same high temperature protection in an easy slip on sleeve that will extend the life of expensive spark plug wires by protecting them where they need it most... at the boot. Just slip these 3/4” diameter double thickness (triple thick at the sewn end) sleeves over any spark plug cable and boot (even right angle boots) to protect them from engine temperatures up to 1,200°F. Once installed, the sleeves require no clearance from hot surfaces, and can even rest directly on hot exhaust headers without affecting performance. Insultherm Spark Plug Boot Sleeves are completely non-conductive, resist all engine chemicals, will not support combustion, and provide an easy, economical solution to the challenge of wire protection in the cramped, high temperature environment of any high performance engine compartment.
Are we missing the specification you need? Please go to our Contact Us page and submit your question to us, or call 1-877-284-7760
| Nominal Size | Product Part # | Diameter | Wall Thickness | Bulk Box | Colors |
| No Ring-Easy Install | |||||
| 4 1/2" 7 1/2" 12" | FBN0.75 FCN0.75 FDN0.75 | 3/4" 3/4" 3/4" | .085" .085" .085" | 144 144 144 | ** |
| With Ring | |||||
| 7 1/2" | FCU0.75 | 3/4" | .085" | 144 | 4 |
**NT in-stock color; all other available by special order only NT, BL, BK, RD
| Physical Properties | |
| Monofilament Thickness (ASTM D-204) | NA |
| Flammability Rating | VW-1 |
| Recommended Cutting | Scissor |
| Colors | 4 |
| Wall Thickness | .085 |
| Tensile Strength - Yarn (ASTM D-2265) lbs. | NA |
| Abrasion Resistance | High/td> |
| Specific Gravity | 1.0 - 1.8 |
| Moisture Absorption % (ASTM D-570) | .01 |
| Hard Vacuum Data (ASTM E-595 at 10-5 torr) | |
| TML | .02 |
| CVCM | .01 |
| WVR | .00 |
| Smoke D-Max (ASTM E-662) | NA |
| Outgassing | Low |
| Chemical Resistance 1=No Effect 2=Little Effect 3=Affected 4=More Affected 5=Severely Affected | |
| Aromatic Solvents | 1 |
| Alipahtic Solvents | 1 |
| Chlorinated Solvents | 1 |
| Weak Bases | 1 |
| Strong Bases | 1 |
| Salt Water (O-S-1926) | 1 |
| Hydraulic Fluid (MIL-H-5606) | 1 |
| Lubricating Oil (MIL-L-7808) | 1 |
| De-Icing Fluid (MIL-A-8243) | 1 |
| Strong Acids | 2 |
| Strong Oxidants | 2 |
| Esters/Ketones | 1 |
| UV Light | 2 |
| Petroleum | 1 |
| Fungus (ASTM G-21) | 1 |
| Salts | 1 |
| Operating Temperatures | |
| Minimum Continuous | -94°F/-70°C |
| Maximum Continuous (MIL-I-23053) | 1,202°F/650°C |
| Melt (ASTM D-2117) | 2,048°F/1,120°C |
| Other Information | |
| Halogen Free | Yes |
| RoHS | Yes |
| UL/CSA | Yes |
| SVHC | None |
25% Restocking Fee Applicable
30 Day Return & Refund Policy
If you are not entirely satisfied with your purchase, we're here to help. You have 30 calendar days to return an item from the date you received it. To be eligible for a return, your item must be unused and in the same condition that you received it. Your item must be in the original packaging.
You are required to have an RMA (Returned Merchandise Authorization) assigned by our customer service team. To apply for an RMA request Form linked here.
Undeliverable Shipments:
- In the event that the customers shipping address provided is deemed undeliverable by the shipping carrier, shipping fee's will not be refunded. Instead it is the customers responsibility to provide a deliverable address.
DEFECTIVE, DAMAGED, OR INCORRECT ITEMS SHIPPED
If you have received a defective, damaged, or incorrect product, do not worry! Please contact us by phone or the Contact Us Form within five (5) days of receiving the product, along with the invoice or packing slip, to schedule a return. We will replace these products at no additional cost. Please keep in mind that we may require photos for documentation and to authorize call tags for returns.
Because we put our customers’ experience first, any defective, damaged, or incorrectly shipped products by CTAM, or by our manufacturers, will be re-shipped at our expense. We will also provide you with a return shipping label with detailed shipping instructions.
Please note that if the item is damaged as a result of the customer’s actions, then a return will not be approved, and the damaged items will be discarded. If the customer wants to keep the damaged items, they must first cover the shipping fees, after which the company will return the damaged items. After the five (5) day time has expired, CTAM will not be responsible for any defective, damaged, or incorrect items, regardless of who is at fault.
Refunds
Once we receive your item, we will inspect it and we will immediately notify you on the status of your refund after inspecting the item. If your return is approved, we will initiate a refund to your credit card (or original method of payment). You will receive the credit within 48 hours after product condition is verified.
Shipping Fees
You will be responsible for paying for your own shipping costs for returning your item. Shipping costs are non-refundable. If you receive a refund, the cost of return shipping will be deducted from your refund. For additional information in this section, create your own Return & Refund Policy.
Contact Us
If you have any questions on how to return your item to us, contact us using our Email Form Here… Or call during our business working hours at 1-877-284-7760
Have a question that is not answered here? Please go to our Contact Us page and submit your question to us.
Looking for a quotation ? We would be happy to help by providing a quick response, inventory status, and Volume Level pricing, when available. Please fill out the form below and a representative will be in touch with you within hours to one business day to answer any questions and quote your request.
Product Details
Insultherm braided fiberglass sleeving has been the first choice among automotive professionals and enthusiasts alike for many of their thermal protection applications. These innovative sleeves offer the same high temperature protection in an easy slip on sleeve that will extend the life of expensive spark plug wires by protecting them where they need it most... at the boot. Just slip these 3/4” diameter double thickness (triple thick at the sewn end) sleeves over any spark plug cable and boot (even right angle boots) to protect them from engine temperatures up to 1,200°F. Once installed, the sleeves require no clearance from hot surfaces, and can even rest directly on hot exhaust headers without affecting performance. Insultherm Spark Plug Boot Sleeves are completely non-conductive, resist all engine chemicals, will not support combustion, and provide an easy, economical solution to the challenge of wire protection in the cramped, high temperature environment of any high performance engine compartment.
Product Specifications
Are we missing the specification you need? Please go to our Contact Us page and submit your question to us, or call 1-877-284-7760
| Nominal Size | Product Part # | Diameter | Wall Thickness | Bulk Box | Colors |
| No Ring-Easy Install | |||||
| 4 1/2" 7 1/2" 12" | FBN0.75 FCN0.75 FDN0.75 | 3/4" 3/4" 3/4" | .085" .085" .085" | 144 144 144 | ** |
| With Ring | |||||
| 7 1/2" | FCU0.75 | 3/4" | .085" | 144 | 4 |
**NT in-stock color; all other available by special order only NT, BL, BK, RD
| Physical Properties | |
| Monofilament Thickness (ASTM D-204) | NA |
| Flammability Rating | VW-1 |
| Recommended Cutting | Scissor |
| Colors | 4 |
| Wall Thickness | .085 |
| Tensile Strength - Yarn (ASTM D-2265) lbs. | NA |
| Abrasion Resistance | High/td> |
| Specific Gravity | 1.0 - 1.8 |
| Moisture Absorption % (ASTM D-570) | .01 |
| Hard Vacuum Data (ASTM E-595 at 10-5 torr) | |
| TML | .02 |
| CVCM | .01 |
| WVR | .00 |
| Smoke D-Max (ASTM E-662) | NA |
| Outgassing | Low |
| Chemical Resistance 1=No Effect 2=Little Effect 3=Affected 4=More Affected 5=Severely Affected | |
| Aromatic Solvents | 1 |
| Alipahtic Solvents | 1 |
| Chlorinated Solvents | 1 |
| Weak Bases | 1 |
| Strong Bases | 1 |
| Salt Water (O-S-1926) | 1 |
| Hydraulic Fluid (MIL-H-5606) | 1 |
| Lubricating Oil (MIL-L-7808) | 1 |
| De-Icing Fluid (MIL-A-8243) | 1 |
| Strong Acids | 2 |
| Strong Oxidants | 2 |
| Esters/Ketones | 1 |
| UV Light | 2 |
| Petroleum | 1 |
| Fungus (ASTM G-21) | 1 |
| Salts | 1 |
| Operating Temperatures | |
| Minimum Continuous | -94°F/-70°C |
| Maximum Continuous (MIL-I-23053) | 1,202°F/650°C |
| Melt (ASTM D-2117) | 2,048°F/1,120°C |
| Other Information | |
| Halogen Free | Yes |
| RoHS | Yes |
| UL/CSA | Yes |
| SVHC | None |
Product Manuals
Frequently Asked Questions
Have a question that is not answered here? Please go to our Contact Us page and submit your question to us.
Videos
25% Restocking Fee Applicable
30 Day Return & Refund Policy
If you are not entirely satisfied with your purchase, we're here to help. You have 30 calendar days to return an item from the date you received it. To be eligible for a return, your item must be unused and in the same condition that you received it. Your item must be in the original packaging.
You are required to have an RMA (Returned Merchandise Authorization) assigned by our customer service team. To apply for an RMA request Form linked here.
Undeliverable Shipments:
- In the event that the customers shipping address provided is deemed undeliverable by the shipping carrier, shipping fee's will not be refunded. Instead it is the customers responsibility to provide a deliverable address.
DEFECTIVE, DAMAGED, OR INCORRECT ITEMS SHIPPED
If you have received a defective, damaged, or incorrect product, do not worry! Please contact us by phone or the Contact Us Form within five (5) days of receiving the product, along with the invoice or packing slip, to schedule a return. We will replace these products at no additional cost. Please keep in mind that we may require photos for documentation and to authorize call tags for returns.
Because we put our customers’ experience first, any defective, damaged, or incorrectly shipped products by CTAM, or by our manufacturers, will be re-shipped at our expense. We will also provide you with a return shipping label with detailed shipping instructions.
Please note that if the item is damaged as a result of the customer’s actions, then a return will not be approved, and the damaged items will be discarded. If the customer wants to keep the damaged items, they must first cover the shipping fees, after which the company will return the damaged items. After the five (5) day time has expired, CTAM will not be responsible for any defective, damaged, or incorrect items, regardless of who is at fault.
Refunds
Once we receive your item, we will inspect it and we will immediately notify you on the status of your refund after inspecting the item. If your return is approved, we will initiate a refund to your credit card (or original method of payment). You will receive the credit within 48 hours after product condition is verified.
Shipping Fees
You will be responsible for paying for your own shipping costs for returning your item. Shipping costs are non-refundable. If you receive a refund, the cost of return shipping will be deducted from your refund. For additional information in this section, create your own Return & Refund Policy.
Contact Us
If you have any questions on how to return your item to us, contact us using our Email Form Here… Or call during our business working hours at 1-877-284-7760