Rubber Marine Fenders
The Saint Lawrence Seaway Development Corporation (SLSDC) intends on purchasing custom fabricated rubber marine fenders with steel mounting brackets. The fender elements shall be molded of a natural, butyl, or EPDM rubber, which is compounded to provide satisfactory resistance to aging, water exposure, weathering, fatigue and abrasion. The material shall be uniform in quality and free from and contamination, cracks or defects that could be detrimental to the usefulness of performance. The material must be suitable for service in ambient temperatures of -40 F to + 100 F and meet the following technical requirements:
Property
Testing Standard
Condition
Requirement
Tensile Strength
ASTM D412
Die C
Original
16 Mpa (Min)
Aged for 96 hours at 70° C
12.8 Mpa (Min)
Elongation at Break
ASTM D412
Die C
Original
400% (Min)
Aged for 96 hours at 70° C
320% (Min)
Hardness
ASTM D2240
Original
78° (Max) Shore A
Aged for 96 hours at 70° C
Original Value
+ 6° Points increase
Compression Set
ASTM D395
Aged for 22 Hours at 70° C
30% (Max)
Tear Resistance
ASTM D624
Die B
70 kN/m (Min)
Ozone Resistance
ASTM D1149
1 ppm at 20% Strain at 40° C for 100 Hours
No cracking visible by eye.
Fender mounting brackets must be ASTM A-36 or better structural steel plates. All responses shall be submitted to Steven Latulipe, Contract Specialist at steven.latulipe@dot.gov.
Steven P. Latulipe, Phone 3157643260, Email steven.latulipe@dot.gov - Patricia L. White, Contracting Officer, Phone (315) 764-3236, Fax (315) 764-3268, Email patricia.white@dot.gov
