PITCHES and WAXES

This is a chart of some of the various pitches and waxes that are available to the optician and what they are mostly used for, or at least what the normal usage of them is.
Please note that it's not complete although it does have a lot of stuff not normally used in the amateur field.
It's been taken and slightly modified from another website.

MATERIAL NAME APPLICATION TYPE MELTING POINT SET TYPE AVAILABLE PACKAGES
BC 122 Blocking cement Blocking 140 - 150oF 1 lb. bars, 5 lb. box
GUGOLZ 55 Precision Polishing pitch 125oFVery soft1 kg pkgs.
USA 53 Very soft glass Optical pitch 130 - 142oFVery soft1 kg. tins
R - 34 Glass to metal adhesive Optical wax 130oFHard, low meltBulk 50 lb. boxes
Burgundy light Opticians Pitch Polishing 131 - 133oF1 kg. tins
R - 16 Lens grinding and polishing Optical wax 133oFHard, very tackyBulk 50 lb. boxes
#2 Burgundy Opticians Pitch Polishing 135oF1 kg. tins
Amber soft Opticians Pitch Polishing 143 - 147oF1 kg. tins
USA 64 Soft glass Optical pitch 143 - 147oFSoft1 kg. tins
Green Pitch Opticians Pitch Polishing 145 - 155oF1 kg. tins
USA 73 Medium glass (such as soda, lime,etc..) Optical pitch 152 - 155oFMedium 1 kg. tins
Standard Burgundy Opticians Pitch Polishing 158 - 162oF1 kg. tins
USA 82 Crown, Quartz, Pyrex, Low Exp. Optical pitch 158 - 162oFMedium hard1 kg. tins
GUGOLZ 64 Precision Polishing pitch 160oFSoft1 kg. pkgs.
USA 91 Fused Quartz, BK7 Optical pitch 168 - 172oFHard1 kg. tins
#CR Black All purpose blocking Optical pitch 168oFSlowVery soft1/2 lb. bars or bulk
BC 167 Blocking cement Blocking 170 - 175oF1 lb. tins
#1 Jewelers Super Adhesion Sealing wax 170oF1/2 oz. bars
#2 Bankers Commercial Use Sealing wax 170oF1/2 oz. bars
#2 Jewelers Lapidary special Sealing wax 170oF1/2 oz. bars
#6 Bankers Precision Sealing wax 170oF1/2 oz. bars
R Precision Sealing wax 170oF 1/2 lb. bars & bulk
#W Green or Black All purpose blocking Optical pitch 172oFslowMedium soft1/2 lb. bars or bulk
GUGOLZ 73 Precision Polishing pitch 175oFMedium1 kg. pkgs.
Amber hard Opticians Pitch Polishing 178 - 182oF1 kg. tins
GUGOLZ84 Precision Polishing pitch 180oFHard1 kg. pkgs.
#W3 Black All purpose blocking Optical pitch 182oF1/2 lb. bars or bulk
GUGOLZ 91 Precision Polishing pitch 187oFVery hard1 kg. pkgs.
#R Black All purpose blocking Optical pitch 188oFQuickHard1/2 lb. bars or bulk
R - 51 Glass to glass adhesives Optical wax 200oFHard, High meltBulk 50 lb. boxes
WAFER #300 Mounting silicon wafers Wafer mounting 74oC7" x 7/8" dia. bars
UNI-WAX 40 Mounting silicon wafers Mounting wax 74oCBars
UNI-WAX 10 Semi conductor Wafers, Crystals Blocking wax 75oCBars