Flat seals - Barbieri Rubber

Description

Rubber washer-type seals can be used for a wider range of applications than the traditional OR, as they give a much more ample seal surface. Also they work properly whether under minimum or considerable pressure and compression levels.

The choice of mix and hardness is strategic when using washer seals, as the contact surface is usually large and the results obtained may differ widely if the hardness is changed even by a small percentage.

BARBIERI can produce this particular type of seal using two different manufacturing processes:

– Using a mold

– Using a molded sleeve

O.D.	I.D.	H min – H max (from the cutting sleeve)
10	4,5	1-50
10	6	1-50
10,5	6	1-55
11,5	10	1-70
12	6	1-30
12,8	10	1-70
14,5	10	1-70
15	8	1-70
15,2	11,1	1-60
17,4	13,5	1-70
17,8	11	1-70
18	10	1-70
18	11,8	1-70
19,5	7,5	1-70
19	10	1-70
19,2	11,5	1-80
19,6	10	1-70
19,9	14	1-70
20	6,5	1-55
20	12	1-70
20	12	1-80
20	13	1-80
20	13	1-70
22	8	1-70
21,8	17	1-70
22	16,5	1-70
22	19,5	1-70
22,4	17,5	1-70
23	9	1-70
23	9	1-70
23	17	1-70
23,5	9	1-70
23,5	12	1-70
23,5	14,8	1-70
24	8	1-70
24	10	1-70
24	12	1-70
24	12	1-80
24	16	1-70
24	18	1-70
24,5	17	1-70
24,5	17	1-70
25	13,5	1-70
25	14	1-70
25	19	1-70
25,5	13,5	1-70
26	12	1-70
26	13,5	1-70
26	17,6	1-70
26,5	21	1-70
27	15	1-33
27	15	1-70
27	16	1-70
27	20	1-70
28	6,5	1-70
28	6,5	1-70
28	15	1-70
28	18	1-70
28	20	1-70
28	22	1-64
29,5	14,5	1-70
30	10	1-70
30	12	1-70
30	14	1-70
30	16	1-90
30	25	1-70
30,5	20	1-70
30,7	20	1-70
31,5	20	1-70
32	15	1-32
32	15	1-32
32	18	1-34,5
32	21	1-70
32	26	1-70
33	21	1-80
33	21	1-70
35	8,5	1-70
35	12	1-70
35	20	1-70
35,5	20	1-70
35	26	1-70
35,9	25,9	1-70
36	28	1-70
36	32	1-70
36,9	26,9	1-70
37	20	1-33
38	23	1-70
38	25	1-70
38	26	1-70
38	28	1-56
38	30	1-70
38,5	25	1-70
39	18	1-70
39	30,5	1-70
39	33,5	1-70
39,2	28,5	1-70
39,5	27,5	1-70
40	22	1-130
40	25,5	1-70
40	26	1-70
40	26	1-70
40	28	1-70
40	30	1-70
42	15	1-70
42	25	1-70
42	32	1-70
42,7	32,7	1-70
43	11	1-40
43	27	1-70
44	32	1-70
44	34	1-70
44	35	1-70
42,7	32,7	1-70
44,4	38	1-70
44,9	34,9	1-70
45	10	1-70
45	33	1-70
45	33	1-70
45	39	1-70
45	40	1-70
45,5	33	1-70
46	33	1-70
46	40	1-70
47	30	1-70
47	32,5	1-70
47	40	1-70
47	42	1-70
47,7	42,5	1-70
48	31,5	1-80
48	32	1-70
48	42	1-70
48,1	31,8	1-70
49	29	1-70
49	39	1-70
49,5	39,5	1-70
50	26	1-70
50	29	1-70
50	32	1-70
50	33	1-70
50	40	1-70
51,5	10,5	1-25
51,5	44,5	1-70
53	27	1-70
53	33	1-70
53,5	45,3	1-70
54	26	1-70
54,1	48,1	1-70
55	39	1-70
55	45	1-65
55,5	50,5	1-70
56	26	1-70
56	44	1-70
58	38	1-70
58	41,5	1-70
58	42	1-70
58	47	1-70
58	49	1-70
58	52	1-80
59	47	1-70
60	30	1-70
60	36	1-70
60	40	1-70
60	40	1-70
60	54	1-70
61	54	1-70
62	19	1-35
62	56	1-70
65	61	1-70
65,6	55,7	1-70
66	56	1-70
67	47	1-70
67	48	1-70
67	61	1-70
67	61	1-70
68	49	1-70
69	60	1-70
69,34	60,1	1-70
69,34	60,1	1-70
70	47	1-70
70	52	1-70
70	63,5	1-70
72	61,2	1-70
72	62	1-80
72	65	1-80
72	68	1-70
73	56	1-70
74	68	1-70
75	59	1-70
76	72	1-70
77	60	1-70
78	39	1-20
78	42	1-70
80	54	1-70
80	56	1-70
82	45	1-70
83	74	1-70
84	59	1-70
84	75	1-70
84,2	75,1	1-70
84,2	75,2	1-70
85,5	81	1-70
86	59	1-70
87	78	1-70
87	81	1-70
88,4	77	1-70
89	65	1-70
90,5	87,5	1-70
92	70	1-70
94	72,5	1-70
94	75,5	1-70
94	82	1-70
94,5	76	1-70
98	85	1-70
100	80	1-70
100	97	1-70
105,5	88,5	1-70
106	88	1-70
106	92	1-70
107	92	1-70
107,5	87	1-70
108	97	1-70
110	82	1-70
110	90	1-70
110	102	1-70
112	100	1-70
114,5	96,5	1-70
115	94	1-70
115	96	1-70
115,7	95	1-70
123	110	1-70
124	90	1-70
133	112	1-70
136	112	1-70
140	132	1-70
160	130	1-70
165	154	1-70
173	165	1-70
212	200	1-70

Additional information

Using a mold	The manufacturing process for molding of individual rubber seals makes it possible to achieve extremely limited tolerances, but the edges of the seal cannot have a radius of 0 due to mold processing requirements. – Good surface finish – Very narrow tolerances – Possibility of small production runs On the other hand, it is not possible to obtain gaskets with sharp edges.
Using a molded sleeve	This manufacturing process involves cutting the seal from a molded rubber sleeve. First of all, a rubber sleeve is molded with the exact internal and external diameter of the finished seal but with a much greater length. Once this “rubber pipe” has been obtained, it is cut using special machinery to the required thickness, thus creating the required seal. This system produces perfectly flat seals with 0 radius edges. However, to obtain economical rubber seals using this manufacturing process it is necessary to produce medium to large runs. In short, the advantages of using this seal manufacturing process are: – Thickness tolerance +/- 0.10. – Excellent quality-price ratio, in particular for large quantities. – Perfectly flat pieces, which can also be used for automatic assembly. – Ability to create seals of different thicknesses using the same sleeve, without having to go to the expense of additional molds. – Maximum seal thanks to the sharp edges.
Production minimum quantity	Washers are produced on commission; we don't keep them in stock. The minimum production quantity is 10,000 Pcs
Materials	Standard materials used for rubber flat seals:
SBR	Styrene-butadiene rubber
EPDM	Ethylene-pylene terpolymer
EPDM Perox	Perox Peroxide EPDM
NBR	Nitrile rubber
VMQ	Silicone rubber