Premium-Grade, Flexible Butyl Rope Sealant
MarMac’s Butyl Sealant (C990) from H.B. Fuller is a flexible butyl rope joint gasket used for sealing precast concrete structures. Butyl Sealant is perfect for sealing joints of manholes, septic tanks, box culverts, concrete pipe, concrete vaults, utility vaults, vertical panel structures, and more. It is also a great choice for sealing the seams of metal sheeting such as roof panels and Morton Building walls.
Butyl Sealant is permanently flexible, tacky, resistant to moisture and to deterioration by exposure to acidic and alkaline environments. It is available in a variety of sizes to fit a the application at hand. It meets or exceeds the ASTM C990 standard for butyl-tapes.
Exhibiting high elasticity and showing no adhesion loss or cracking in cold weather, Butyl Sealant can be applied in a wide range of temperatures and can endure extreme outdoor weather conditions. The flexible tape form makes for a watertight seal and fast installation.
Butyl Sealant is non-shrinking and non-hardening. It is chemical-resistant, showing no deterioration after 30 days exposure, and meets or exceeds ASTM C990, Section 6 specifications for butyl tapes, as well as AASHTO M-198 with the exception of flash point and fire point. Butyl Sealant is not intended for use in expansion joints or joints that move.
Features & Benefits
- Meets or exceeds ASTM C990 specification
- Chemical-resistant
- Permanently flexible, including in cold weather
- Extreme temperature performance
- Fast & easy application
- No shrinkage, non-corrosive
- Does not deteriorate, oxidize, or harden with age
- No adhesion loss or cracking
- Hydrostatic performance
| DIAMETER | LENGTH | CARTON QTY |
|---|---|---|
| 0.75″ | 174′ | 8 |
| 1.00″ | 174′ | 6 |
| 1.25″ | 174′ | 4 |
| 1.50″ * | 131′ | 4 |
*Special order only
Meets all requirements of ASTM C 990 Section 6.2. Meets requirements of AASHTO M-198 with the exception of flash point and fire point.
Not recommended for use in areas of concentrated oils or hydrocarbon solutions. Prior to working with MarMac Butyl Sealant, consult the product label and Safety Data Sheet (SDS) for necessary health and safety precautions.
During testing method ASTM C 990 for chemical resistance, MarMac Butyl Sealant (C990) had no visible change after 30 days of immersion in 5% solutions of HCI, H₂SO₄, NaOH, KOH, or H₂S. Upon testing in accordance with ASTM C 765, Butyl Sealant had no sag or shape change after 14 days when tested at 158°F for elevated temperature flow, and did not experience cracking or adhesion loss when tested at -10°F for low temperature flexibility.
| APPLICATION PROPERTIES | MIN | MAX |
|---|---|---|
| Service Temperature Range | -40 °F | 250 °F |
| Application Temperature | 20 °F | 120 °F |
| VALUE | METHOD | |
| Color | Black | Visual |
| Hydrocarbon Content | 51 % min | ASTM D297 |
| Ash Content | 35 % min | AASHTO T111 |
| Specific Gravity | 1.15 – 1.40 | ASTM D71 |
| Ductility | 5.0 cm min | ASTM D113 |
| Compression Index @ 77°F | < 100 lbs/in3 | ASTM C972 |
| Compression Index @ 32°F | < 200 lbs/in3 | ASTM C972 |
| Cone Penetration @ 77°F | 55 – 85 dmm | ASTM D217 |
| Cone Penetration @ 32°F | 35 – 65 dmm | ASTM D217 |
| Chemical-Resistance* | Pass | ASTM C990 |
| Low Temperature Flexibility | Pass | ASTM C765 |
| Elevated Temperature Flow | Pass | ASTM C765 |
| Flash Point | 375°F (191°C) | ASTM D92 |
| Volatile Matter by Weight | < 2 % | ASTM D6 |
| Recycled Content by Weight | ≤ 7.5 % |
*30-day immersion exposure to 5% solutions of HCl, H2SO4, NaOH, KOH, H2S
Butyl Sealant (C990) should be stored in its original packaging (shelf life 2 years), out of direct sunlight, protected from the elements. Material should be kept away from direct heat, sparks and open flame. For optimum results, store in a tepid (60-80° ̊F) environment prior to installation. Storage temperature should not exceed 120°F (49°C).
The surface of the structure to be sealed should be dry and clean of dirt and debris. Take a roll of MarMac Butyl Sealant from case and avoid touching the sealant to dirt and other materials on the job site to ensure proper adhesion. Apply Butyl Sealant with exposed sealant against the concrete structure and apply around the joint without stretching. Cut to length and complete seal by butting the cut ends without overlapping and molding the ends together. Remove the protective release paper by peeling it away from the sealant. Set the joint properly with the sections aligned and straight. MarMac Butyl Sealant will adhere to the concrete surface and fill the annular space in a uniform manner between the tongue and groove when the pieces are properly joined. MarMac’s RB Adhesive Primer is recommended for installations below 40°F (4°C).
AVAILABILITY
Diameters: 0.75, 1.00, 1.25, 1.50″
Roll lengths: 174, 131′ (1.50″ only)
APPLICATIONS
Manhole Joints
Septic Tanks
Box Culverts
Reinforced Concrete Pipe
Concrete Valves
Utility Vaults
Vertical Panel Structures
Metal Sheeting
