Materials:

Porcelain - Inexpensive, strong material base for application of glaze.

Glazes:

White - Most common, least expensive wear surfaces

Durablu - Formulated with the addition of a fine alumina powder. Excellent wear surface. Smooth and very low friction

Blue Satin - Also formulated with alumina. It has a matte (orange peel ) finish for reduced drag and static buildup. Specially designed for fiberglass applications.

Dimension Ranges:

ACI Part No.	"A" Dimension Inches/ mm		"B" Dimension Inches/ mm		"C" Dimension Inches/ mm		"D" Dimension Inches/ mm		"E" Dimension Inches/ mm
241	1.000	25.400	1.9375	49.213	1.375	34.925	.3750	9.525	1.625	41.275
247	1.500	38.100	2.750	69.850	1.5626	39.688	.5000	12.700	2.125	53.975
266	2.000	50.800	3.875	98.425	1.875	47.625	.8750	22.225	3.1875	80.963
300	2.500	63.500	4.875	123.825	2.125	53.975	.7187	18.256	3.625	92.075
604	3.000	76.200	5.375	136.525	2.250	57.150	.7500	19.050	3.875	98.425
822	4.000	101.600	6.875	174.625	2.625	66.675	.8125	20.638	5.250	133.350
823	4.500	114.300	6.875	174.625	2.625	66.675	.8125	20.638	5.125	130.175
830	8.000	203.200	10.125	257.176	2.500	63.500	.8750	22.225	9.125	231.775

SMALL RINGS

ACI Part No.	"A" Dimension Inches/mm		"B" Dimension Inches/mm		"C" Dimension Inches/mm
256	.094	2.388	.2656	6.747	.1875	4.763
841	.1094	2.778	.3125	7.938	.2187	5.556
292	.110	2.794	.320	8.128	.2031	5.159
259	.1250	3.175	.3906	9.922	.3437	8.731
2100	.149	3.785	.294	7.468	.097	2.464
243	.1875	4.763	.8125	20.638	.5000	12.700
78	.1875	4.763	.5000	12.700	.3594	9.128
262	.191	4.851	.4687	11.906	.2812	7.144
242	.2031	5.159	.718	18.256	.3750	9.525
2491	.300	7.620	.5312	13.494	.1875	4.763
1957	.3750	9.525	.7500	19.050	.2500	6.350
244	.5625	14.288	1.1562	29.338	.5625	14.288
2824	.7812	19.844	1.3125	33.338	.4375	11.113
23	.8125	20.638	1.3125	33.338	.2969	7.541

Rings can be supplied, mounted on wires or as plain ceramic.