






🧩 The ultimate glue that sticks with you through every fix and project!
S-18 All-Purpose Adhesive is a versatile, waterproof, and heat-resistant bonding solution designed to adhere to both porous and non-porous materials including rubber, metal, leather, wood, and glass. Manufactured in the USA since 1949, it delivers strong, flexible bonds with excellent peel strength and aging resistance, making it ideal for professional repairs, marine applications, and everyday DIY projects.






| ASIN | B09FF36NST |
| Best Sellers Rank | #2,801 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #7 in Contact Cements |
| Brand | RH Adhesives |
| Brand Name | RH Adhesives |
| Color | Off-White |
| Compatible Material | Ceramics, Cork, Fabric, Felt, Glass, Metals, Rubber Compounds, Tile |
| Container Type | Can |
| Customer Reviews | 4.4 out of 5 stars 506 Reviews |
| Full Cure Time | 24 Hours |
| Item Form | Liquid |
| Item Package Quantity | 1 |
| Manufacturer | RH Adhesives |
| Material | Neoprene |
| Material Type | Neoprene |
| Model | S-18 |
| Other Special Features of the Product | Heat Resistant, Strong |
| Special Feature | Heat Resistant, Strong |
| Specific Uses For Product | Repair, Manufacturing, Bonding Porous and Non-Porous Materials, Glazing Drop-In Aluminum Windows |
| UPC | 850009177834 |
| Unit Count | 8 Fluid Ounces |
| Viscosity | Medium (1200-1400 cps at room temperature) |
| Volume | 8 Fluid Ounces |
| Water Resistance Level | Waterproof |
J**R
Works Great for Repairs
Someone recommended this adhesive for repairing leather boots, and I have to say. It’s probably the best glue I’ve used for that purpose. The key is proper preparation: remove the old glue thoroughly and clean the area with sandpaper or a rasp so the new glue has a solid grip. I repaired my boots with it, and so far, they’ve held up perfectly. I also fixed a pair of wedges for my wife that had a glue shortage from manufacturing. Again, I cleaned and prepped the surface, applied this adhesive, and the shoes are holding strong with no issues. If you plan to use it frequently, I recommend getting a larger size. The glue can lose some strength if it sits unused for a long time. After trying different adhesives, this is the one that works best for strong, lasting bonds.
G**I
A product that actually works.
a great adhesive for plastics and other materials. Does not leave a white residue like other products. A useful product mod the DIY individual.
A**Y
Used for leatherwork
This glue holds super well. Does in one coat what would take me three of a different brand.
S**Y
The adhesive I needed. Not sure how to reduce setting time.
I am attempting to use yoga mat material to protect my car against hail damage. It's like draping fabric and sewing, but with glue. My "pins" are removable zip ties. I will say, the warmer it is outside, the better it sets. It's setting quicker when the temp is up; however it's gumming up at the can opening due to heat as well. I'm adding a brushing of it at the seams to protect against anything getting in there. I'm using 100ft rolls of 5mm neoprene yoga mat material to protect and it's heavier than it may seem. I have at least 23kg of material on a station wagon at the moment. Because of weight, the zip ties support it while it sets and I'm pressing the seams together for a bit. This is a lower profile solution for hail damage. It's likely not going to solve softball sized hail, but would protect up to around a golf ball sized hail. I have a tight fitting, indoor car cover that may go on first, layer this on top, then use my outdoor cover to protect against damage. Pool noodles seem to not protect the sides. The inflatable versions of car covers require power and are about 4x my cost layout. I'll likely add velcro closures to get to the driver door, pop the hatch and keep separate pieces for the side mirrors and roof antenna. Now that I know what it does, I can likely handle a few other projects with neoprene, like padding an area in my basement or even using as an acoustical deadener glue. UPDATE: Took off a star because this stuff did not hold things together in heat after what appeared to be cured. It then fell apart in rain. The items glued are neoprene, just didn’t held up to heat, weight and water. Probably best for indoor use only. Moving to grommets and grommet lock plugs to attempt to keep pieces together.
M**H
Saved and expensive leather couch
Got this to patch a leather couch. Had to cut out torn leather and replace it with new leather. I cut the tear into a square the same size as the patch. Used this adhesive to glue a leather backer under the new square hole and then to glue the new leather patch to the leather backer. Used Fortivo leather recoloring balm to color match. Dries flexible sticks great.
K**R
Best glue I tried for neoprene
Been using this to make neoprene product designs - very good new glue compared to others, works great on bonding neoprene (and repairing shoes, torn sandals). For my neoprene work, i can just use this glue to bond the material together and save the time of sewing. It is not as strong as sewing, but saves a bunch of time. Keeping this glue around all the time now for different projects.
R**H
Not an all purpose glue.
Don't know about other customers, all i do know is that this item showed a very promising strong glue. I applied it to A very simple job. Sorry but to no affect. Plastic to Plastic. To know avail, defective or poor quality. Asking for a refund. Thank you
G**9
I bought this for the wrong purpose.
Probably is a good product but I had to use a different adhesive eventually because I needed a strong bond to metal.
Trustpilot
2 weeks ago
4 days ago