Datwyler’s Parco brand is a leading supplier of O-rings and custom rubber seals that are FDA compliant (meeting the standard CFR Title 21 Part 177.2600 Rubber Articles Intended for Repeated Use.) Explore further to access an extensive list of FDA conforming compounds and sample test results.
Full Line of NSF-61 Seals for Drinking Water Systems
Datwyler seals made from its internally lubricated, peroxide-cured, ethylene-propylene (EPDM) compounds are tailored to the unique needs of water filtration equipment. Datwyler’s 5778 compounds are available in four hardnesses from 50 to 90 Shore A durometer and are certified to NSF/ANSI Standard 61 (“NSF-61”). The enhanced properties of Datwyler’s 5778 compounds make them ideal for chlorinated or chloraminated water applications. Datwyler recommends its 5778 compounds for faucets, hose bibs, and other residential plumbing fixtures.
5778 Meets Your Needs
1. Excellent Resistance to Chloraminated Water
In most fluids, elastomers reach a plateau in volume swell after several days of exposure. By contrast, chloraminated water has long-term effects on many commonly used seal materials, causing them to continue swelling even after weeks of immersion. In some cases, there appears to be no limit to the degree of swelling that can occur. Datwyler’s 5778 seals are peroxide-cured, giving them high chemical stability. 5778 seals contain no sulfur, so they are compatible with materials commonly used in plumbing fixtures. The seals experience long-term volume swell of only one percent, making them suitable in chloraminated or chlorinated water.
2. Enhanced Resistance to Compression Set
When installed, seals must resist taking a set from compression. When a seal takes a set, it no longer exerts force on the mating surfaces, resulting in leakage. A compound with low compression set, like our 5778 EPDM compounds, better maintain their elastomeric properties and original thickness, preserving seal integrity. Seals made from Datwyler’s 5778 compounds provide excellent resistance to compression set at higher temperatures. After testing for 22 hours at 212°F, 5778-70 seals had a compression set of only 11 percent.
Key Features
Datwyler’s 5778 EPDM compounds are designed for chloraminated water applications. Key features include the following:
Certified to NSF/ANSI Standard 61:
Datwyler 5778 seals are approved for materials used in drinking water service (listed for maximum exposure of seal material 1.3 in2/liter of commercial hot water at 180°F; listing includes domestic hot and cold water).
Excellent resistance to chloraminated water:
Datwyler 5778 seals had volume swell of only 1 percent after prolonged exposure to chloraminated water.
Meets FDA §177.2600:
Datwyler 5778 seals are approved for repeated use in food handling equipment.
Excellent wear resistance:
Datwyler 5778 internally lubricated seals held up for more than 750,000 cycles of faucet opening and closing.
Wide range of service temperatures:
Datwyler 5778 seals are suitable for applications ranging from -40 to +200°F.
Chemical Resistance
USE WITH
DO NOT USE WITH
Acetone
Automotive Brake Fluid
Skydrol
Steam
Water
Automatic Transmission Fluid
Gasoline
Military Aircraft Hydraulic Fluid
Typical Values for Compound 5778-70 General-purpose EPDM
Section of Spec.
Physical Property
Requirement
Typical Value
ASTM
Test Method
Z1
Z2
Original Properties
Hardness, Shore A
Tensile strength, MPa (psi), min.
Ultimate elongation, pct., min.
Modulus at 100 pct. elongation, psi
Specific gravity
CONCLUSION: Compound 5778-70 meets the requirements of ASTM D2000 M2DA714 B36 EA14 F19 G11 G21 Z1 Z2 Z3 Z4.
ASTM is the acronym for the American Society for Testing and Materials. IRM is the acronym for Industry Reference Material.
Source: Test Report 1813.
5778-70 EPDM Seals
Full Line of NSF-61 Seals for Drinking Water Systems
Datwyler seals made from its internally lubricated, peroxide-cured, ethylene-propylene (EPDM) compounds are tailored to the unique needs of water filtration equipment. Datwyler’s 5778 compounds are available in four hardnesses from 50 to 90 Shore A durometer and are certified to NSF/ANSI Standard 61 (“NSF-61”). The enhanced properties of Datwyler’s 5778 compounds make them ideal for chlorinated or chloraminated water applications. Datwyler recommends its 5778 compounds for faucets, hose bibs, and other residential plumbing fixtures.
5778 Meets Your Needs
1. Excellent Resistance to Chloraminated Water
In most fluids, elastomers reach a plateau in volume swell after several days of exposure. By contrast, chloraminated water has long-term effects on many commonly used seal materials, causing them to continue swelling even after weeks of immersion. In some cases, there appears to be no limit to the degree of swelling that can occur. Datwyler’s 5778 seals are peroxide-cured, giving them high chemical stability. 5778 seals contain no sulfur, so they are compatible with materials commonly used in plumbing fixtures. The seals experience long-term volume swell of only one percent, making them suitable in chloraminated or chlorinated water.
2. Enhanced Resistance to Compression Set
When installed, seals must resist taking a set from compression. When a seal takes a set, it no longer exerts force on the mating surfaces, resulting in leakage. A compound with low compression set, like our 5778 EPDM compounds, better maintain their elastomeric properties and original thickness, preserving seal integrity. Seals made from Datwyler’s 5778 compounds provide excellent resistance to compression set at higher temperatures. After testing for 22 hours at 212°F, 5778-70 seals had a compression set of only 11 percent.
Key Features
Datwyler’s 5778 EPDM compounds are designed for chloraminated water applications. Key features include the following:
Certified to NSF/ANSI Standard 61:
Datwyler 5778 seals are approved for materials used in drinking water service (listed for maximum exposure of seal material 1.3 in2/liter of commercial hot water at 180°F; listing includes domestic hot and cold water).
Excellent resistance to chloraminated water:
Datwyler 5778 seals had volume swell of only 1 percent after prolonged exposure to chloraminated water.
Meets FDA §177.2600:
Datwyler 5778 seals are approved for repeated use in food handling equipment.
Excellent wear resistance:
Datwyler 5778 internally lubricated seals held up for more than 750,000 cycles of faucet opening and closing.
Wide range of service temperatures:
Datwyler 5778 seals are suitable for applications ranging from -40 to +200°F.
Chemical Resistance
USE WITH
DO NOT USE WITH
Acetone
Automotive Brake Fluid
Skydrol
Steam
Water
Automatic Transmission Fluid
Gasoline
Military Aircraft Hydraulic Fluid
Typical Values for Compound 5778-70 General-purpose EPDM
Section of Spec.
Physical Property
Requirement
Typical Value
ASTM
Test Method
Z1
Z2
Original Properties
Hardness, Shore A
Tensile strength, MPa (psi), min.
Ultimate elongation, pct., min.
Modulus at 100 pct. elongation, psi
Specific gravity
Thanks for reaching out to us.
We follow tough standards in how we manage your data at Datwyler.
That’s why you’ll now receive an e-mail from us to confirm your request.
If you don’t receive a message, please check your junk folder.
Search
MENU
Products & Services 
