Buried Rubber Waterstop Concrete Waterproofing Rubber Waterstop for Concrete Joint

• Customization: Available
• After-sales Service: Installation Guide
• Application: Outdoor
• Model NO.: waterstop 001
• Certification: CE, ISO, RoHS
• Shape: Roll
• Material: Nr/EPDM/Cr
• Certificate: ISO 9001/CE/RoHS
• Width: 150/200/250/300/350mm/Customized
• Thickness: 4/6/8/10mm/Customized
• Hardness: 60±5 Shore a
• Tensile Strength: ≥12~15 MPa
• Elongation at Break: ≥380%
• Feature: Waterproof, Flexible, Durable, Chemical Resistant
• Function: Anti-Static, Fireproof, Heat Insulation, Sound-ABS
• Sample: Available
• Transport Package: Roll Package, Plastic Bag, Pallet Delivery.
• Specification: Custom
• Trademark: HengJingGong
• Origin: Hengshui Jingtong
• HS Code: 4016999000
• Production Capacity: 120m/Mold, 12 Hours.
• Package Size: 10.00cm * 10.00cm * 20.00cm
• Package Gross Weight: 2.000kg

Product Description

Product Description

- SBR, Neoprene Or Natural Rubber

    , made of quality SBR (styrene butadiene rubber), neoprene rubber or natural rubber, is one of the widest types for concrete structure to prevent liquid leaking in or out. Generally, designed to be cast in the concrete, rubber waterstops are ideal for applications where high physical properties of rubber are required. For example, reservoirs, dams and other water retaining or excluding applications with high movements or water pressure.

Features & benefits

*High elasticity. 

*High elongation.

*Excellent high movement accommodation.

*Capable to withstand high hydrostatic head.

*Adjust for subsidence and seismic movements.

*Hot vulcanized site joints.

Feature

*Core Waterstopping Function: Utilizes the high elasticity and physical properties of rubber to form a tight seal in joints, preventing the penetration of water and other fluids.

*Deformation Adaptation Capability: Can accommodate movements like expansion, contraction, and settlement in concrete structures, maintaining effective water sealing within the designed deformation range.

*Enhanced Structural Stability (For steel-reinforced types): The excellent adhesion between the galvanized steel strip and concrete allows the waterstop to withstand greater tensile and torsional forces, preventing loosening or displacement within the concrete.

Main types:

*Dumbbell type
    , with flat web section, are ideal for construction and partial contraction joints with little or no movements.
*Center bulb type
    , as its name implies, features its center bulb which makes it ideal for contraction and expansion joints including high lateral, transverse and shear movements. Meanwhile, it is perfect for withstanding the subsidence of the joints.

Specification

Materials properties

    SBR and neoprene rubber, as the most common materials for manufacturing, are used extensively in United States and the worlds. The SBR water stop is preferred for water containment, while neoprene rubber waterstops are recommend for applications of sewage disposal or chemical industries. As your request, natural rubber, EPDM, Nitrile and Silicone waterstops are also available.

Physical properties	Test methods	SBR	High tensile neoprene rubber	Natural rubber
Water absorption 2 days at 70°C (% change)	ASTM D-471	5% (max)	5% (max)	5% (max)
Hardness shore A	ASTM D-2240	65	65	65
Tensile strength	ASTM D- 412	3000 psi (min)	2500 psi (min)	3500 psi (min)
Tensile strength at 300% Modulus	ASTM D-412	1150 psi (min)	1150 psi (min)	1450 psi (min)
Ultimate elongation	ASTM D-412	450% (min)	450% (min)	500% (min)
Compression set 22 hours at 70°C (% original deflection)	ASTM D-395	30% (max)	40% (max)	30% (max)
Accelerated aging 96 hours at 70°C (% of tensile strength before aging)	ASTM D-573	80% (min)	80% (min)	80% (min)
Accelerated aging 96 hours at 70°C (% of elongation before aging)	ASTM D-573	80% (min)	80% (min)	80% (min)
Ozone resistance 7 days at 50 PPHM at 70°C, 20% elongation	ASTM D-1149	No crack	No crack	No crack

Installation

    All the are designed to cast in the concrete as an integral joint sealing system. Pre-fabricated waterstops are also supplied to reduce site jointing.

Product Details

Packaging & Shipping

Company Profile

    Hengshui Jingtong Rubber Co., Ltd., located in Hebei Province's Hengshui City, is a professional manufacturer of engineering rubber products. Our product range includes bridge bearings, expansion joints, water stop strips, water stop belts, inflatable cores, building deformation joint device and water plugs, which are widely used in bridge, tunnel, water conservancy, and power engineering projects. The company boasts advanced technology and mature processes to ensure reliable product quality.

    We have a professional technical team and a comprehensive after-sales service system to ensure customers receive high-cost-performance products and attentive service. Hengshui Jingtong Rubber Co., Ltd. is committed to continuous innovation to meet market demands and looks forward to esta  blishing long-term cooperative relationships with customers from both domestic and international markets.

FAQ

Q1: How are sections joined on site? 
A: Heat splicing vulcanizes the joint into the parent material -- a proper splice is stronger than the surrounding rubber.

Q2: What temperature range does it tolerate? 
A: Normal service range is -20°C to +70°C, with no cracking in the low-temperature flexibility test.

Q3: Is it suitable for outdoor service? 
A: Yes -- NR resists weathering and EPDM adds ozone resistance; both suit exposed concrete joints.

Q4: How is the belt fixed before pouring? 
A: Tie it to the reinforcement steel through the wing holes or rely on the embedded wings -- the profile stays centered at the joint line.

Q5: What should be watched during concrete pouring? 
A: Full compaction around both wings -- voids beside the profile are the most common cause of leakage.

Q6: Can custom cross-sections be supplied? 
A: Yes -- dumbbell, center bulb, P-type, and custom profiles per drawing, in NR or EPDM.