{"id":38071,"date":"2021-12-23T15:54:31","date_gmt":"2021-12-23T15:54:31","guid":{"rendered":"https:\/\/www.pei.it\/cz-roletove-kryty-standard\/soffietti-circolari-stagni-termosaldati\/"},"modified":"2025-12-10T10:28:34","modified_gmt":"2025-12-10T10:28:34","slug":"circular-watertight-heat-sealed-bellows","status":"publish","type":"post","link":"https:\/\/www.pei.it\/en\/products\/circular-watertight-heat-sealed-bellows\/","title":{"rendered":"Thermic-welded tight bellows"},"content":{"rendered":"
[vc_row][vc_column][vc_row_inner element_id=”595341″][vc_column_inner width=”3\/5″][vc_single_image image=”35942″ img_size=”full”][vc_empty_space height=”50px”][\/vc_column_inner][vc_column_inner width=”2\/5″][vc_empty_space height=”20px”][vc_btn title=”Contact us for this product” style=”outline-custom” outline_custom_color=”#1e73be” outline_custom_hover_background=”#e34529″ outline_custom_hover_text=”#ffffff” shape=”round” link=”url:%23form|title:TMP1-Coperture%20Telescopiche|” el_class=”bottone_template”]

Thermic-welded tight bellows<\/span><\/span><\/h4>[vc_column_text animation_delay=”0″ css=”” el_class=”testo_template”]They are used when leak-tight protection of the components (i.e. screws, shafts, etc.) is necessary against the contamination made by coolants.<\/p>\n

They have good chemical and heat resistance according to the properties of the materials used<\/a>. Thermic-welded tight bellows are available in various shapes and dimensions.<\/p>\n

Small tooling costs for new moulds should be considered, if not already available in stock.[\/vc_column_text][vc_empty_space height=”50px”][\/vc_column_inner][\/vc_row_inner][vc_separator color=”sky”][\/vc_column][\/vc_row][vc_row element_id=”840365″ css=”.vc_custom_1635159784796{padding-top: 50px !important;}”][vc_column animation_delay=”0″ element_id=”165733″ crp=”480:i:i,480-768:i:i,768-1024:i:i,1024-1280:i:i,1280-1366:i:i,1366-1600:i:i,1600-1920:i:i” el_class=”colonna_tab_template”]

Data<\/h6><\/div>
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Type A fixing schemes<\/span><\/span><\/h4>[vc_single_image image=”62020″ img_size=”full” css=”” el_class=”immagine_template”][\/vc_column_inner][vc_column_inner width=”1\/2″][vc_column_text animation_delay=”0″ css=”.vc_custom_1765362477109{padding-top: 50px !important;}” el_class=”testo_template”]Bellows with type A<\/strong> fastening system have a collar and a flange<\/span><\/p>\n

Bellows data:<\/span><\/b><\/p>\n

\u00d8 ext. (OD)<\/strong> = Round bellow outer diameter<\/span>
\n\u00d8 int. c.<\/strong> = Internal collar diameter<\/span>
\n\u00d8 int. (ID)<\/strong> = Internal bellow diameter<\/span>
\n\u00d8 int.f.<\/strong> = Internal flange diameter<\/span>
\n\u00d8 int. hole<\/strong>\u00a0= Flange hole centre-to-centre diameter<\/span>
\n\u00d8 ext. f<\/strong> = Flange outer diameter<\/span>
\nP.A.<\/strong> = Open length<\/span>
\nP.C.<\/strong> = Closed length<\/span>
\nStroke <\/b>= P.A. \u2013 P.C.<\/span>
\nAP<\/strong> = Opening of 1 fold<\/span>
\nX<\/strong> = Fold height<\/span>[\/vc_column_text][\/vc_column_inner][\/vc_row_inner][vc_separator css=”.vc_custom_1635407629712{padding-top: 50px !important;padding-bottom: 50px !important;}”][vc_row_inner element_id=”839507″][vc_column_inner width=”1\/2″]

Type B fixing schemes<\/span><\/span><\/h4>[vc_single_image image=”62124″ img_size=”full” css=”” el_class=”immagine_template”][\/vc_column_inner][vc_column_inner width=”1\/2″][vc_column_text animation_delay=”0″ css=”.vc_custom_1765362495480{padding-top: 50px !important;}” el_class=”testo_template”]Bellows with type B<\/strong> fastening system have two collars<\/span><\/p>\n

Bellows data:<\/span><\/b><\/p>\n

\u00d8 ext. (OD)<\/strong> = Round bellow outer diameter<\/span>
\n\u00d8 int. c.<\/strong> = Internal collar diameter<\/span>
\n\u00d8 int. (ID)<\/strong> = Bellow internal diameter<\/span>
\nP.A.<\/strong> = Open length<\/span>
\nP.C.<\/strong> = Closed length<\/span>
\nStroke <\/b>= P.A. \u2013 P.C.<\/span>
\nAP<\/strong> = Opening of 1 fold<\/span>
\nX<\/strong> = Fold height<\/span>[\/vc_column_text][\/vc_column_inner][\/vc_row_inner][vc_separator css=”.vc_custom_1635407629712{padding-top: 50px !important;padding-bottom: 50px !important;}”][vc_row_inner element_id=”839507″][vc_column_inner width=”1\/2″]

Type C fixing schemes<\/span><\/span><\/h4>[vc_single_image image=”62060″ img_size=”full” css=”” el_class=”immagine_template”][\/vc_column_inner][vc_column_inner width=”1\/2″][vc_column_text animation_delay=”0″ css=”.vc_custom_1765362512000{padding-top: 50px !important;}” el_class=”testo_template”]Bellows with the type C<\/strong> fastening system have two flanges<\/span><\/p>\n

Bellows data:<\/span><\/b><\/p>\n

\u00d8 Ext. (OD)<\/strong> = Round bellow outer diameter<\/span>
\n\u00d8 Int. (ID)<\/strong> = Bellow internal diameter<\/span>
\n\u00d8 Int. f. <\/strong>= Internal flange diameter<\/span>
\n\u00d8 int. hole<\/strong>\u00a0= Internal flange diameter<\/span>
\n\u00d8 Ext. f<\/strong> = External flange diameter<\/span>
\nP.A.<\/strong> = Open length<\/span>
\nP.C.<\/strong> = Closed length<\/span>
\nStroke <\/b>= P.A. \u2013 P.C.<\/span>
\nAP<\/strong> = Opening of 1 fold<\/span>
\nX<\/strong> = Fold height<\/span>[\/vc_column_text][\/vc_column_inner][\/vc_row_inner][vc_separator css=”.vc_custom_1635407629712{padding-top: 50px !important;padding-bottom: 50px !important;}”]<\/div>

Standard materials<\/h6><\/div>
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Materials available<\/span><\/span><\/h4>[vc_column_text animation_delay=”0″ css=”.vc_custom_1680860312593{padding-top: 50px !important;}” el_class=”testo_template”]\n