Borosilicate Circle, Square & Rectangle Sight Glass

NOTE: Minimum purchase of $100 per each size required for these prices
1-800-780-3776

Deep discounts available on orders of $500.00 or more per size

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NOTE: Minimum purchase of $100 per each size required for these prices
 
Circles - Sight Glass
Dia. in
Inches
1/8
+/- 1/32
3/16
+/- 1/32
1/4
+/- 1/32
3/8
+/- 1/16
1/2
+/- 1/16
5/8
+/- 1/16
3/4
+/- 1/16
1
+/- 3/32
Dia. in
Inches
2 $9.86 $10.25 $14.94 $29.26 $47.24 $57.54 $80.70 $94.20 2
3 $17.39 $18.75 $26.67 $49.88 $79.55 $97.08 $111.11 $113.11 3
4 $20.03 $23.48 $33.07 $68.18 $111.11 $111.11 $113.32 $125.44 4
5 $28.77 $34.25 $47.07 $91.82 $115.74 $117.25 $119.75 $128.32 5
6 $38.15 $43.19 $60.86 $111.11 $119.69 $121.25 $125.95 $166.85 6
7 $49.21 $55.87 $79.25 $113.45 $121.91 $124.06 $158.13 $211.68 7
8 $60.97 $67.85 $98.96 $119.25 $139.18 $155.83 $189.03 $263.32 8
9 $74.07 $83.32 $111.11 $122.61 $164.53 $173.67 $222.38 $319.67 9
10 $88.02 $93.25 $118.71 $124.02 $193.54 $200.10 $264.81 $390.90 10
11 $110.77 $119.77 $127.25 $140.94 $227.81 $231.10 $301.11 $462.03 11
12 $120.89 $127.25 $135.56 $159.28 $272.83 $276.82 $333.68 $535.00 12
14 $125.21 $136.36 $140.23 $212.38 $327.47 $341.16 $449.56 $718.78 14
16 $128.25 $138.45 $147.71 $234.11 $402.95 $462.23 $570.01 $964.84 16
18 $137.25 $143.51 $174.71 $273.07 $473.68 $592.47 $746.03 $1,166.48 18
20 $141.00 $153.74 $206.76 $313.27 $550.73 $764.57 $854.95 $1,407.65 20
Intermediate diameters take the price of the next larger diameter listed.
Edge Finish: Edges Ground ±1/32"
 
NOTE: Minimum purchase of $100 per each size required for these prices
Squares and Rectangles - Sight Glass
Length x
Width
1/8, 3/16,
1/4, +/- 1/32
3/8 +/- 1/16 1/2 +/- 1/16 5/8 +/- 1/16 3/4 +/- 1/16 1 +/- 3/32 Area
SQ. IN.
2 x 2 $6.08 $19.12 $101.74 $111.11 $112.82 $115.23 4
3 x 3 $13.48 $20.10 $105.24 $113.47 $115.82 $119.23 9
4 x 4 $23.08 $38.79 $107.89 $119.81 $121.36 $125.32 16
5 x 5 $32.88 $55.84 $108.24 $125.56 $126.23 $128.56 25
6 x 6 $47.47 $80.73 $109.15 $128.56 $130.59 $134.46 36
7 x 7 $60.10 $101.09 $110.89 $131.91 $133.56 $184.97 49
8 x 8 $76.37 $111.11 $111.74 $137.26 $141.54 $238.82 64
9 x 9 $97.90 $113.21 $121.74 $141.68 $181.44 $306.25 81
10 x 10 $111.11 $119.41 $136.31 $172.76 $201.21 $372.04 100
11 x 11 $119.51 $125.23 $166.18 $210.93 $269.77 $454.87 121
12 x 12 $125.12 $127.97 $191.61 $248.63 $318.11 $538.26 144
Per Sq. In
over 144
$0.91 $1.59 $2.36 $2.76 $3.13 $3.34 Per Sq. In
over 144
* Intermediate sizes under 144 sq. inches take the price of the next larger size.
* On pieces exceeding a 6:1 length to width ratio, a premium is charged due to difficulty of fabrication.
* On 1/16, 1/8, 3/16, and 1/4 inches, the price for ground edges will be quoted on request.

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