98 Hooked on SERVICE Nylon Nylon is the strongest of all ropes It is r e cognized for its shoc k r e sistance and elasticity Nylon lasts five times longer than natur al fibers because it r e sists abr a sion c h emicals gas oil and rotting Polyester Poly ester is almost as strong as nylon but it does not str etc h as muc h Consequently its shoc k r e sistance is r e duced It is r e sistant to humidity mould c h emicals and abr a sion Poly ester is mor e r e sistant to sun r a ys than nylon Polypropylene Gener ally supple and ver y light polyprop ylene floats making it particularly popular with the nautical industr y This type of rope is the most popular among a v er age consumers since it is r e sistant to humidity mould gas oil and other c h emicals Ho wever it tends to deterior ate when e x posed to sun Polyprop ylene is weak er than nylon and poly ester but is mor e economical On the other hand it is stronger than natur al fibers Manila This cable is a solid long natur al fiber that is r e sistant to heat and UV r a ys unlik e synthetic fibers Ho wever it is vulner able to humidity and c h emicals It is biodeg r a dable r e sists str etc h ing and is the strongest of natur al fibers Sisal Sisal is also a natur al biodeg r adable fibr e but it is muc h less r e sistant than manila It is r e sistant to UV r a ys but is vulner able to c h emicals and mould It is often used as par c el string for gar d ening and for other applications that do no r e quir e e xtr eme r e sistance Jute This short natur al fiber offers ver y little r e sistance Jute is biodeg r a dable and is perfect for par cel string and gar dening Unlik e sisal it is a soft fiber that does not damage plants or bushes Cotton This short natur al fiber is not ver y r e sistant It is biodeg r a dable and is often used as household string for the kitc h en w orkshop or gar a ge This fiber has an attr active white appear ance is soft and is ver y easy to knot Different materials description Polypropylene Nylon Polyester Manila SisalJute Cotton Resistance to rotting l l l l l l l l l l l l l l l Resistance to mould l l l l l l l l l l l l l l l Resistance to oil and gas l l l l l l l l l l l l l l l l l Resistance to acid l l l l l l l l l l l l l l Handling l l l l l l l l l l l l l l l l l l l Durability l l l l l l l l l l l l l l l l Abrasion l l l l l l l l l l l l l l Shock load l l l l l l l l l l l l l l Storage dr y humid dr y humid dr y humid dr y dr y dr y Floatation Ye s No No No No No Resistance to heat weakens at 65C 150F weakens at 180C 350F weakens at 180C 350F no effect no effect no effect Resistance to the sun l l l l l l l l l l l l l l l l l l l l