A field-castable multi-part kit that is also available as custom-made pre-cast solid pieces

Contains 1% boron along with a high hydrogen content in a hard rubber-like elastomer

Fire and heat resistant

To cast 1 cubic foot of SWX-237 requires 97 pounds of Boron Silicone mix (1 liter requires 1.59 kilograms of Boron Silicon mix)

A field-castable multi-part kit that is also available as custom-made pre-cast solid pieces

Contains 1.4% boron along with a high hydrogen content in a hard rubber-like elastomer

Fire and heat resistant

To cast 1 cubic foot of SWX-237Z41 requires 80 pounds of Boron Silicone mix (1 liter requires 1.26 kilograms of Boron Silicon mix)

Comparable to NS-41

Inexpensive neutron radiation shielding

Field-castable into closed containers

Contains 0.9% boron and a very high hydrogen content

Sets up in about 30 minutes, requires only mixing with water

Comparable to PPB-9

Contains three times as much hydrogen as ordinary concrete along with 1.56% boron

Rugged "concrete-like" neutron radiation shielding is easily cast in the field

Low cost material is completely non-combustible

Comparable to CNW B

Boron free version of SWX-277 (above)

Contains three times as much hydrogen as ordinary concrete

Rugged "concrete-like" neutron radiation shielding is easily cast in the field

Low cost material is completely non-combustible

Comparable to CNW A