MatJack has the only 5-year Unconditional Warranty in the Industry
The safest, most versatile multi-size Domehead Plug ever. Totally new form end to end, this plug is the most advanced is design technology. It will allow you to do the job safety and efficiently.

Included in the safety features are: Cross-Biased Reinforcing Cord That Reduces Weight while increasing strength; controlled growth to make the plug rise in the center and grow shorter to relieve the sidewall stress; most sizes have the flexibility to enter through a 24" opening; a space-age "spider weave" with ring insert impregnated in the head, allows the transfer of pressure to the spider ring rather the lid. This advancement assures a 2:1 inflation safety ratio.

All test-through and return hoses, as well as the inflation fittings, are mounted in the lid as standard equipment in most sizes. Optional acid, hydrocarbon or other covers are also available.
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Item #

Item Name

Pipe Size

Minimum Pipe Diameter

Maximum Pipe Diameter

Required Inflation Pressure

Maximum Back/Test Pressure

Add To Cart/Request Quote
051-46 N/A Multi-size Domehead™ - Back Plug N/A 4 - 6 in. N/A 3.50 in. N/A 6.25 in. N/A 30 psi N/A 15 psi Request Quote
051-610 N/A Multi-size Domehead™ - Back Plug N/A 6 - 10 in. N/A 5.25 in. N/A 10.25 in. N/A 30 psi N/A 15 psi Request Quote
051-812 N/A Multi-size Domehead™ - Back Plug N/A 8 - 12 in. N/A 7.25 in. N/A 12.25 in. N/A 25 psi N/A 15 psi Request Quote
051-1016 N/A Multi-size Domehead™ - Back Plug N/A 10 - 16 in. N/A 9.50 in. N/A 16.25 in. N/A 25 psi N/A 15 psi Request Quote
051-1218 N/A Multi-size Domehead™ - Back Plug N/A 12 - 18 in. N/A 11.50 in. N/A 18.25 in. N/A 25 psi N/A 15 psi Request Quote
051-1224 N/A Multi-size Domehead™ - Back Plug N/A 12 - 24 in. N/A 11.50 in. N/A 24.25 in. N/A 25 psi N/A 15 psi Request Quote
051-1521 N/A Multi-size Domehead™ - Back Plug N/A 15 - 21 in. N/A 14.00 in. N/A 21.25 in. N/A 20 psi N/A 10 psi Request Quote
051-1530 N/A Multi-size Domehead™ - Back Plug N/A 15 - 30 in. N/A 14.00 in. N/A 30.25 in. N/A 20 psi N/A 8 psi Request Quote
051-1824 N/A Multi-size Domehead™ - Back Plug N/A 18 - 24 in. N/A 16.00 in. N/A 24.25 in. N/A 20 psi N/A 10 psi Request Quote
051-2036 N/A Multi-size Domehead™ - Back Plug N/A 20 - 36 in. N/A 19.00 in. N/A 36.25 in. N/A 20 psi N/A 8 psi Request Quote
051-2448 N/A Multi-size Domehead™ - Back Plug N/A 24 - 48 in. N/A 22.00 in. N/A 48.25 in. N/A 15 psi N/A 8 psi Request Quote
051-3660 N/A Multi-size Domehead™ - Back Plug N/A 36 - 60 in. N/A 34.50 in. N/A 60.25 in. N/A 10 psi N/A 6 psi Request Quote
051-4278 N/A Multi-size Domehead™ - Back Plug N/A 42 - 78 in. N/A 37.00 in. N/A 78.25 in. N/A 10 psi N/A 6 psi Request Quote
051-4872 N/A Multi-size Domehead™ - Back Plug N/A 48 - 72 in. N/A 46.00 in. N/A 72.25 in. N/A 10 psi N/A 6 psi Request Quote
051-6096 N/A Multi-size Domehead™ - Back Plug N/A 60 - 96 in. N/A 58.00 in. N/A 96.25 in. N/A 10 psi N/A 6 psi Request Quote
051-46 N/A Multi-size Domehead™ Front Plug N/A 4 - 6 in. N/A 3.50 in. N/A 6.25 in. N/A 30 psi N/A 15 psi Request Quote
051-610 N/A Multi-size Domehead™ Front Plug N/A 6 - 10 in. N/A 5.25 in. N/A 10.25 in. N/A 30 psi N/A 15 psi Request Quote
051-812 N/A Multi-size Domehead™ Front Plug N/A 8 - 12 in. N/A 7.25 in. N/A 12.25 in. N/A 25 psi N/A 15 psi Request Quote
051-1016 N/A Multi-size Domehead™ Front Plug N/A 10 - 16 in. N/A 9.50 in. N/A 16.25 in. N/A 25 psi N/A 15 psi Request Quote
051-1218 N/A Multi-size Domehead™ Front Plug N/A 12 - 18 in. N/A 11.50 in. N/A 18.25 in. N/A 25 psi N/A 15 psi Request Quote
051-1224 N/A Multi-size Domehead™ Front Plug N/A 12 - 24 in. N/A 11.50 in. N/A 24.25 in. N/A 25 psi N/A 15 psi Request Quote
051-1521 N/A Multi-size Domehead™ Front Plug N/A 15 - 21 in. N/A 14.00 in. N/A 21.25 in. N/A 20 psi N/A 10 psi Request Quote
051-1530 N/A Multi-size Domehead™ Front Plug N/A 15 - 30 in. N/A 14.00 in. N/A 30.25 in. N/A 20 psi N/A 8 psi Request Quote
051-1824 N/A Multi-size Domehead™ Front Plug N/A 18 - 24 in. N/A 16.00 in. N/A 24.25 in. N/A 20 psi N/A 10 psi Request Quote
051-2036 N/A Multi-size Domehead™ Front Plug N/A 20 - 36 in. N/A 19.00 in. N/A 36.25 in. N/A 20 psi N/A 8 psi Request Quote
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